1st-6th…Wet weather swept through the Southern US on Monday due to a strong low pressure system moving through the region. The system that brought precipitation to the Southwest finally made its way eastward and into the Plains. Flow around this system picked up moisture from the Gulf of Mexico and triggered scattered showers over the Southern Plains and Gulf states. In Henderson, Texas, 0.50 inches of rain were reported, while Richland, Texas reported strong winds at 25 mph with gusts up to 38 mph. As this system moved into the Gulf states, rainfall totals remained less than a quarter of an inch. These areas also remained cool with highs in Texas in the 40s and the Southeast remained in the 60s. In the north, a strong low pressure system hovered just offshore of New England, which continued to push moisture onshore from the Atlantic Ocean. Thus, overcast skies covered the region which allowed for a few light rain and snow showers persisted over New England and the Northeast with accumulations less than a half of an inch. Highs remained in the 30s and 40s. In the Central US, high pressure build over the Northern Plains and pulled cool and dry air in from the North. This brought sunny skies to the Northern and Central Plains, which spread over the Mississippi Valley and Great Lakes. Most areas remained in the 30s and 40s under mostly sunny skies. In the West, another low pressure system in the Pacific Ocean approached the West Coast. However, high pressure dominated and allowed for a warm and sunny day over the Pacific Northwest and California.
Both coasts saw wet and active weather on Wednesday. In the West, a cold front from the eastern Pacific brought an unstable airmass to northern California and areas of the Pacific Northwest today. The front pushed across the coast and move through these regions with showers and locally heavy rainfall during the morning hours. As the disturbance trekked further inland by the afternoon, off and on light showers continued to spread over the coastal areas. A few isolated thunderstorms accompanied showers behind the front this afternoon. Meanwhile, bands of snowfall blanketed the higher elevations of northern California. Elsewhere in the West, light, scattered, valley showers and mountain snow developed throughout ares of the Intermountain West as a wave of low pressure trekked through the region. In the East, a strong low pressure system off the Mid-Atlantic coast continued to produce precipitation near the New England and Mid-Atlantic shoreline. Wrap-around flow from this system ushered Atlantic moisture into these regions and produced areas of light rain and snowfall through the afternoon. As this system continued to affect the Northeast, the Southeast saw drier and warmer weather activity today. Low relative humidity levels and gusty winds across most of Florida created favorable conditions for wildfire spread.
Finally, dry and tranquil weather activity persisted throughout the Central U.S.
Relatively calm weather continued throughout the country on Friday.
The only main weather system was a low pressure system moved through the Rockies and was on the verge of moving into the Plains. There was not a lot of moisture wrapped up in this system, but areas of snow fell through the Central Rockies. Winter Weather Advisories were in effect for parts of Colorado and Wyoming due to this snow. At the same time, Red Flag Warnings were posted in southeast Colorado due to the low humidity in that part of the state. Low humidity was also experienced in the Southeast including Alabama, Georgia and Florida. Fire weather was quite high in those states as Red Flag Warnings were also posted there.
Meanwhile, a low pressure system off the West Coast brought only a few rain showers to the immediate coast of Northern California. This low will continue to move southward into the weekend, eventually providing precipitation to Southern California and parts of the Southwest.
A high pressure system stretched from the Gulf Coast through the Great Lakes and provided dry conditions for much of the East. The Northeast rose into the 30s and 40s, while the Southeast saw temperatures in the 50s and 60s. The Northern Plains rose into the 20s and 30s, while the Southern Plains saw temperatures in the 60s and 70s.
7th-13th…Low pressure moved through the nation's midsection today and brought some active weather with it. Strong thunderstorms raced across the Plains and caused several areas of wind damage throughout northern Texas. Storms were expected to continue through the afternoon and evening, with rain expected to push into the Mississippi Valley. In addition to the wet weather associated with the Plains low, showers and thunderstorms were reported along the Gulf coast as warm moist air streamed northward onto land. East of the Mississippi Conditions were much more pleasant, with warm weather and clear skies. Temperatures throughout the Mid-Atlantic rose into the 60s, while highs in the Deep South rose into the 70s. In the West, temperatures were cooler as a trough in the Jet Stream sagged into the West Coast. This trough brought some scattered clouds and numerous brief showers to the region.
The Central and Northern High Plains saw snow on Tuesday as a low pressure system moved off the Central Rockies. This system strengthened as it moved into the Central Plains and away from the mountains, and low level flow around this trough pulled moisture in from the Gulf of Mexico. The northern edge of this system pulled cool air in from Canada and triggered snow over the High Plains. Snowfall accumulation ranged between 1-2 inches in most areas, with up to 5 inches in western Nebraska. Highs remain near freezing over the Northern and Central Plains. Ahead of this system, a warm front extended eastward and over the Midwest. Due to warm air moving in from the South, this allowed for scattered rain showers. Rainfall totals remained less than a half of an inch, but due to this slow-moving system, many areas of the Mid- and Upper Mississippi River Valley saw problems with flooding. In Spring Hill, Missouri, 0.24 inches of rain was reported, while 0.35 inches fell over Hastings, Nebraska earlier in the morning. Strong winds were reported over the Mississippi River Valley as the low pressure system approached. Gusts reached up to 22 mph in Auburntown, Tennessee. Meanwhile, in the West, another trough of low pressure moved over the Great Basin and into the Central Rockies. This had light moisture associated with it, and kicked up scattered snow over the Rockies. Most areas of Utah saw snowfall accumulations between 2-4 inches. This system dipped into the Southwest and with warmer temperatures, allowed for scattered showers and thunderstorms to develop. Phoenix reported 0.12 inches of rainfall with isolated thunderstorms, while northern Arizona saw near 2 inches of snow. In the Pacific Northwest, another Pacific storm pushed a cold front onshore, which brought cloudy skies and cool conditions, but has not yet triggered any significant precipitation. Medford, Oregon saw 0.06 inches of light rain, as it is situated right on the coast.
Several weather systems produced unsettling weather activity throughout the nation on Wednesday. In the West, a dissipating front produced pockets of light rain and high elevation snow from portions of central California through the Pacific Northwest during the morning and afternoon hours. To the east, a trough of low pressure from the Pacific continued to crank out a mix of rain and snow across the Great Basin and portions of Arizona and New Mexico. Meanwhile to the south, another storm system in northeastern New Mexico produced significant rain and snow showers and gusty winds from northern New Mexico and Colorado to the Southern and Central Plains. Elsewhere, a cold air mass remained in place over southern California and yielded to cool daytime highs. In the Midwest, a quasi-stationary low pressure system produced unsettling weather activity from the Northern Plains through the Great Lakes. Wrap-around moisture from this system combined with cold air to produce a mix of rain, snow, and ice. A warm front associated with this system reached across Mid-Mississippi Valley through the Mid-Atlantic and aided in producing active weather in the Southeast. A swath of increasing rainfall and thunderstorms developed from eastern Mississippi to South Carolina. Some thunderstorms in eastern Mississippi and Alabama ran the risk of turning strong to severe with hail and locally damaging winds. The risk of heavy rainfall and flash flooding throughout these states increased through the afternoon as showers and thunderstorms became more widespread.
The early start to the severe weather season continued on Friday, although there were no official reports of tornadoes. Instead, a developing low pressure system moved through the Southeast and Mississippi Valley, drawing a considerable amount of moisture northward from the Gulf of Mexico. This moisture produced areas of heavy rain accompanied by thunderstorms that sparked Severe Thunderstorm Watches in the Southeast and Tennessee Valley. Large hail was reported for these thunderstorms from Alabama through Kentucky. These thunderstorms were expected to continue to roll through the Southeast into the evening.
Florida also saw its share of severe thunderstorms along the peninsula of the state. Farther to the north, a low pressure system rotated in the eastern Plains and provided some snow showers in the Upper Midwest and scattered precipitation in the Northeast. In the West, a strong Pacific storm slammed into the coast and renewed significant rain and high elevation snow from Washington through Northern California. Winter Storm Warnings were posted for the higher elevations of California.
The Northeast rose into the 40s and 50s, while the Southeast saw temperatures in the 60s and 70s. The Northern Plains rose into the 30s and 40s, while the Northwest saw temperatures in the 40s and 50s.
14th-20th…Widespread clouds covered the northeastern quadrant of the nation on Monday as a strong nor'easter centered to the south of Long Island continued to produce wet and windy weather across New England and portions of the nearby Mid-Atlantic coast. Periods of heavy rainfall, damaging winds continued to pound the saturated region through the afternoon and created local flooding issues, blowing snow, and possible power outages. Meanwhile in the South, low pressure and an associated cold front sparked unsettling weather activity across New Mexico and Texas as the pair dropped southward toward northern Mexico. Areas of scattered rain and high elevation snow fell across eastern and southern New Mexico, while widespread showers and isolated thunderstorms developed throughout the Texas Panhandle. In the West, a building ridge of high pressure brought warm and dry weather conditions to most of the Pacific Northwest, Intermountain West, California, and Arizona. Ridging over these regions allowed temperatures to warm nicely through the afternoon with daytime values reaching near to well above seasonal norms. The ridge also temporarily postponed wet weather across the Pacific Northwest by keeping a Pacific frontal system offshore. In the Central US, fair weather conditions with mild daytime temperatures developed throughout the Midwest due to high pressure.
Showery weather continued to fall across the Southeast today, while a fairly quiet weather pattern developed throughout the rest of the nation.
In the East, widespread clouds covered a good portion of the Southeast throughout the first half of the day as an area of low pressure trekked across the northern Gulf region. The system spread light rain showers from Louisiana through Alabama during the morning hours before reaching Georgia and northern Florida by the afternoon. Meanwhile, the Central U.S. experienced fair weather activity due to a large ridge of high pressure reaching across the Plains, while the Midwest, Great Lakes, and Northeast saw another day of warm daytime highs. In the West, tranquil weather conditions continued throughout most of the West due to a ridge of high pressure located off the West Coast. Slight offshore flow kept daytime temperatures throughout California above seasonal averages. Meanwhile, the passing of a frontal disturbance and the return of brisk northerly flow produced little change in daytime temperatures across the Pacific Northwest.
Another day of relatively mild and inactive weather occurred throughout the country on Friday. The main weather producer was a long cold front that moved through the middle of the country and stretched from the Southern Rockies through the Upper Midwest. This feature did not carry much moisture along with it, thus only a fairly narrow area of rain and snow pushed through the Central Rockies and Central Plains. This front represented the majority of the precipitation that fell in the country on Friday. Other than this, scattered diminishing snow showers fell in the Intermountain West, while some morning showers fell in the Outer Banks of North Carolina. Meanwhile, a high pressure system stretched into the Southeast and kept dry and clear conditions dominant through the eastern third of the country. In the West, a weak low pressure system dropped into the Great Basin, but dry conditions persisted throughout the West.
The Northeast rose into the 50s and 60s, while the Southeast saw temperatures in the 70s and 80s. The Northern Plains rose into the 20s and 30s, while the Northwest saw temperatures in the 40s and 50s.
21st-27th…The Northern Rockies had light snow on Monday, while the East Coast had light and scattered showers. A strengthening low pressure system moved from the Pacific Northwest and into the Northern and Central Rockies. This system had some light moisture associated with it and triggered light snowfall over the Northern Rockies. The Cascades, as well as the higher elevations of Idaho, Montana, and Wyoming experienced snowfall accumulation between 1-2 inches. The Pacific Northwest saw a few residual showers with no significant accumulation. Highs remained in the 40s over most of the region. The rest of the West Coast remained under sunny skies with highs in the 70s and 80s as high pressure dominated. Elsewhere, in the East, a strong low pressure system continued spinning over the East Coast. This system pulled moisture onshore from the Atlantic Ocean and pushed overcast skies onshore. This system allowed for a few scattered showers to develop over the Northeast and New England, with total accumulation less than a tenth of an inch. Highs remained in the 40s and 50s over most of the Northeast and New England. Behind this system saw mild weather as high pressure built over the Central US. This allowed for mostly sunny skies, warm temperatures, and pleasant conditions. The Midwest saw highs in the 50s and 60s, while the Central and Southern Plains saw highs in the 70s and 80s.
The Northeast saw another rainy day with flooding on Tuesday. A low pressure system spinning over the Mid-Atlantic states continued to pull ample moisture onshore, which triggered periods of heavy rain over the Northeast. Widespread scattered showers extended over most of New England and down the Ohio River Valley. Taunton, Massachusetts saw a midday total of 1.71 inches of rain, while 1.14 inches was reported in Berlin, New Hampshire. Albany, New York saw 0.85 inches of rain, while most of the Ohio Valley saw less than a quarter of an inch. Highs ranged from the mid-40s to lower 50s over the region. Meanwhile in the Rockies, a low pressure system continued tracking southward from the Northern Rockies into the Central Rockies. This had some light moisture associated with it, which kicked up a few scattered snow showers over the region. Southern Wyoming and northern Colorado reported 3-5 inches of new snow on Tuesday. A trough extended northward from this system and moved into the Northern Plains. This was expected to trigger light and scattered showers, but has only brought a few patchy clouds to the region. Rain has not yet been reported. The Upper Midwest saw another day of flooding problems, due to sunny skies and warm temperatures melting the frozen lakes and snow over the region. Highs approached 60 in some areas of the Upper Mississippi River Valley, while the Mid-Mississippi River Valley reached near 70. Out West, high pressure returned to the West Coast which allowed for mostly sunny skies and warm conditions. California saw highs in the 70s and 80s, while the Pacific Northwest saw highs near 60.
An intense low pressure system moved into the Lower Mississippi Valley on Thursday and brought intense thunderstorms to the region. One of the more organized lines of storms pushed through the Florida Panhandle and brought heavy rain and gusty winds. Thunderstorms also developed in the Mississippi Valley along a cold front associated with the low pressure system. These storms were expected to gain strength throughout the afternoon, and eventually produce supercell thunderstorms containing large hail, strong winds and possible tornadoes. More steady rain was found to the north and east of the storm, as a stationary front extended into the Northeast. Temperatures throughout the East were warm ahead of the approaching storm, with highs in the 60s reaching as far north as Maine. In the Plains, a few low clouds were noted in Montana and North Dakota while the West saw high clouds streaming ashore as a late season storm system moved into the Northwestern coast. The storm didn't produce a whole lot of rain but precipitation fell all the way south into the Central Coast of California, where the rainy season is coming to a close.
The main weather producer was a low pressure system that began the day over the Appalachians before moving through the Mid-Atlantic and into the Atlantic Ocean. There was a tremendous amount of moisture associated with this storm that produced widespread morning rain from the Appalachians through southern New England. As the storm moved out into the ocean, precipitation quickly diminished throughout the East. The heaviest rainfall occurred in the peninsula of Florida and was accompanied by strong thunderstorms that acted to concentrate the precipitation in the state. Moist flow in the Northwest continued to produce scattered rain and high elevation snow from Northern California through the Northwest. Additional showers fell in the Intermountain West. Strong winds blew through the Southwest and Southern Plains. Much of New Mexico was under High Wind Warnings due to the intensity of the wind. Southwest winds 35 to 45 mph were common in the area. The middle of the country was dry even as a low pressure system moved into the Plains and instigated high elevation snow in the Central Rockies. The Northeast rose into the 20s, 30s, and 40s, while the Southeast saw temperatures in the 70s and 80s. The Northern Plains rose into the 40s and 50s, while the Northwest saw temperatures in the 40s.
28th-31st…Widespread clouds covered the Eastern Seaboard on Monday as a trough of low pressure continued to support stormy weather along the East Coast through the afternoon. A moisture packing storm over the Northeast fueled swaths of mixed precipitation throughout New England. The heaviest mounts of precipitation soaked areas along the New England coastline and created increased flood risks through the afternoon. To the south, waves of low pressure located off the Mid-Atlantic Coast continued to spark scattered rain showers and thunderstorms across the Mid-Atlantic during the early morning. Most of the precipitation and thunderstorms over this region moved offshore into the nearby Atlantic waters by the afternoon. Finally to the south, heavy rainfall and strong thunderstorms associated with a cold front over the Florida Peninsula brought severe weather activity to southern Florida. A tornado touched down in Oakland Park, just north of Fort Lauderdale between 8:00 and 8:30 am. While, the twister left behind debris and property damage, no immediate injuries were reported. Behind these storms, the flattened ridge of high pressure over the Plains began to edge into the East on Monday. The ridge brought drier weather to the eastern valleys and created breezy winds across areas from the Ohio Valley to the Gulf Coast States. Winds from the northwest began to usher cooler air into the East and yielded to lower temperatures during the afternoon. Low relative humidity levels and breezy wind conditions translated into increased wildfire risk over the Florida Panhandle. Meanwhile, high pressure over the Plains produced another day of warm to hot temperatures across the Central US. Low relative humidity levels and breezy winds created increased risks of grassland fires from the Northern High Plains through portions of the Central Plains. Western South Dakota, eastern Nebraska, and north-central Kansas saw extreme fire weather conditions. In the West, a large low pressure system in the Gulf of Alaska swung a frontal boundary toward the Pacific Northwest Coast on Monday. Moist onshore flow and energy from this system created heavy rain and high elevation snowfall across the Pacific Northwest. Precipitation reached southward across areas of northern California and spread eastward across the Northern Intermountain West and the Northern Rockies. Meanwhile, high pressure over the Four Corners kept the Central Great Basin, the Southwest, and southern California under dry weather conditions.
Rain associated with the complex low pressure system off the East Coast finally weakened Tuesday. Rain that lasted in the Mid-Atlantic over the last few days finally came to an end Tuesday morning. However, steady rain continued to pound through the Northeast as the low pressure system moved up to the coast and transported massive amount of Atlantic moisture across the region. 3 to 5 inches of rain fell in Connecticut, and the Bristol and Norfolk County in Massachusetts received 4 to 7 inches of rain Tuesday. This steady rain set a few daily maximum rainfall records. For example, as of 2p.m., Providence of Rhode Island received 4.39 inches, which exceeded the previous record 2.57 inches. The total rainfall on both Monday and Tuesday reached nearly 8 inches in Providence. Apart from the steady rain, strong winds 30 to 40 mph with up to 50 mph gusts also occurred in parts of the Northeast Tuesday afternoon. Moving to the West, unsettled and cold weather persisted across much of the Western U.S. Tuesday as a strong system remained in place. Coastal and valley rain with mountain snow continued to fall from the Pacific Northwest and Northern California to Northern Rockies. In addition, very strong winds 40 to 60 mph caused blustery conditions in higher terrains.
Gloomy skies hung over the Northeast on Wednesday as a weakening low pressure system remained off the New England coast. While the heaviest rainfall across this region came to an end today, flood warnings remained in effect for rivers and streams across the region. Some of these rivers continued to flood as continual rises occurred across mainstream rivers and small streams through the afternoon. The rest of the East saw clearer skies with pleasant weather activity and unseasonably warm temperatures as high pressure built into the region. Ridging over the region raised temperatures across the Midwest, the eastern Valleys, the Mid-Atlantic, and the Southeast to well above seasonal averages. Low relative humidity levels and breezy winds raised concerns of grassland fire danger across southeastern South Dakota, north-central Kansas and south-central Nebraska, and northwestern Iowa. Similar conditions raised wildfire and general fire danger concerns across southern Missouri and from Alabama through Florida. Meanwhile, active weather continued in the West as an energetic front and waves of low pressure moved through the western half of the nation. These disturbances dropped across the Central Great Basin with colder temperatures, rain, and heavy mountain snowfall. Winter storm watches and warnings remained in effect for all the higher terrain areas of this region, while high wind watches and warnings remained in effect across Arizona and southern California. Elsewhere, Pacific moisture spread across the West Coast and triggered areas of light rainfall in the Pacific Northwest and northern California. Finally dry, warm, and windy weather raised fire weather concerns from southern Arizona through New Mexico, southeastern Colorado, the Texas Panhandle and western Oklahoma.
Jim G. Munley, jr.
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