NATIONAL STORM SUMMARY

JULY 2016

 

1-9: A wave of low pressure moved across the Mississippi Valley on Monday, while a dry weather pattern prevailed across the West Coast. An area of low pressure transitioned across the middle Mississippi Valley. This system, combined with a warm frontal boundary, brought widespread rain and thunderstorms to the southern Plains, the central Plains, the Mississippi Valley, the Midwest, the Tennessee Valley and the Mid-Atlantic. Severe thunderstorm watches were issued in northern Tennessee, Kentucky and West Virginia. Flash flood watches were also issued in several states spanning from the middle Mississippi Valley to the northern Mid-Atlantic. Corsicana, Texas, reported a midday total of 3.47 inches of rain. Madisonville, Ky., reported a midday total of 3.37 inches of rain.

Active weather impacted several areas from the Intermountain West to the Midwest on Wednesday, while above normal temperatures affected the southern Plains. A wave of low pressure and an associated cold front generated strong to severe thunderstorms across the Midwest, the central Plains and the northern Plains. Severe thunderstorm warnings were issued in parts of the Ohio Valley, the Tennessee Valley and the Mississippi Valley. Columbia, Mo., reported 1.00 inch sized hail. Cedar Rapids, Iowa, recorded wind gusts of 62 mph. Heavy rain also brought localized flooding to parts of the central Plains and the Midwest. Flash flood warnings were issued in northeast Missouri. Flood warnings were issued in central Kansas. Davenport, Iowa, reported a midday total of 3.00 inches of rain. St. Joseph, Mo., reported a midday total of 2.98 inches of rain. Meanwhile, strong to severe thunderstorms fired up across the upper Intermountain West and the northern high Plains as a low pressure area transitioned over the Rockies. Severe thunderstorm warnings were issued in eastern Montana.

A low pressure system brought stormy weather to the Plains, the Midwest and the Mid-Atlantic on Friday, while a separate system moved over the Northwest. An area of low pressure shifted eastward over the upper Mississippi Valley and the western Great Lakes. This system and an associated cold front generated strong to severe thunderstorms over portions of the southern Plains, the Mississippi Valley, the Tennessee Valley, the Midwest and the northern Mid-Atlantic. Severe thunderstorm warnings were issued for several counties across northeast Michigan. Glen Arbor, Mich., reported 3.00 inch sized hail. Severe thunderstorm watches were issued in Tennessee and Kentucky. Flash flood warnings were also issued for central Kentucky. Owensboro, Ky., reported widespread tree damage due to strong winds. Meanwhile, extreme heat continued to affect portions of the Deep South and the Southeast.

 

10-16: Strong thunderstorms impacted the northern tier of the country on Monday, while isolated storms popped up across the Southeast. A low pressure system drifted slowly eastward across the northern high Plains and south central Canada. The system collided with warm and humid air over the Plains, which generated strong to severe thunderstorms in the northern Plains and the upper Midwest. Flood warnings and flood advisories were issued in parts of Montana, North Dakota, South Dakota and Minnesota. St. Stephen, Minn., reported 1.00 inch sized hail. Ortonville, Minn., reported a midday total of 4.30 inches of rain.  A stationary front continued to produce isolated storms in the Deep South and the Southeast. Severe thunderstorm warnings were issued in parts of Alabama, Georgia, South Carolina and North Carolina. Cowarts, Ala., reported trees down due to strong winds. Wilmington, N.C., reported a midday total of 1.11 inches of rain.

 

Active weather impacted portions of the Plains and the Midwest on Wednesday, while a stationary front lingered over the Mid-Atlantic. A pair of cold frontal boundaries drifted across the Plains and the Great Lakes. Rain and thunderstorms broke out over the upper Intermountain West, the northern Plains, the central Plains and the Midwest. Severe thunderstorm warnings and flash flood warnings were issued in a handful of counties across Missouri. Sedalia, Mo., reported a midday total of 1.50 inches of rain. Columbia, Mo., reported a midday total of 0.86 of an inch of rain. Just to the north, severe thunderstorm watches were issued in Iowa. Flood warnings were also scattered across Minnesota. Cushing, Iowa, reported 1.50 inch sized hail. Jackson, Minn., reported a midday total of 0.76 of an inch of rain. Due to the cold frontal passages, temperatures dropped 5 to 15 degrees below normal from the upper Intermountain West the northern Plains. Stanley, Idaho, recorded a morning low of 28 degrees. Just to the east, scattered showers and thunderstorms fired up across the Southeast. A stationary front also generated multiple clusters of thunderstorms in the central Appalachians and the Mid-Atlantic. Flood advisories were issued in parts of eastern Maryland, Delaware, New Jersey and eastern Pennsylvania. Philadelphia Wings Airport, Pa., reported a midday total of 1.21 inches of rain.

Strong thunderstorms broke out across the Plains on Friday, while a trough of low pressure shifted over the Northwest. A cold frontal boundary stretched southwestward from southeast Canada to the central Plains. Scattered showers and isolated thunderstorms fired up along and near this frontal boundary over the Northeast and the Midwest. Warm air interacted with the tail end of this frontal boundary, which lead to strong to severe thunderstorms over the central and southern Plains. A severe thunderstorm warning was issued in northeast New Mexico. Hershey, Neb., reported 1.75 inch sized hail. Tinker Air Force Base, Okla., reported a midday total of 2.80 inches of rain. The remnants of another frontal system kept rain and thunderstorms in the picture for parts of the Mid-Atlantic, the Southeast and the Deep South. Severe thunderstorm warnings were scattered from northeast Florida to southwest Virginia. Flash flood warnings were issued in southern Mississippi and southeast Louisiana. Slidell, La., reported a midday total of 1.97 inches of rain. Hattiesburg, Miss., reported a midday total of 1.75 inches of rain. Meanwhile, a trough of low pressure brought light to moderate showers to parts of northern Washington.

17-23: Stormy weather affected portions of the northern Plains and the Mississippi Valley on Wednesday, while monsoonal moisture surged across the Four Corners. A wave of low pressure transitioned eastward across the northern Plains. This system interacted with warm and humid air, which triggered isolated showers and thunderstorms over the northern Plains and the upper Mississippi Valley. Reeve, Wis., reported 1.75 inch sized hail. Belleville, Ill., reported a midday total of 2.08 inches of rain. Meanwhile, the remnants of a stationary front interacted with moisture-rich air, which lead to isolated showers and thunderstorms across the Deep South and the Southeast. Darlington, S.C., reported a midday total of 2.39 inches of rain. Southern Pines, N.C., reported a midday total of 0.94 of an inch of rain. Out west, monsoonal thunderstorms popped up across the Four Corners and the eastern edge of the Great Basin. Flood advisories were issued in central Arizona.

A frontal system extended from southeast Canada to the Intermountain West on Friday, while extreme heat affected the Plains and the Southwest. A cold frontal boundary stretched from southeast Canada to the upper Intermountain West. Rain and thunderstorms fired up along and near this frontal boundary over parts of the Northeast, the Midwest and the

northern Plains. Severe thunderstorm watches were issued in northern Maine. Flash flood warnings and flood advisories were issued for southern Ohio. Marysville, Ohio, reported a midday total of 1.32 inches of rain. Sharon, Pa., reported trees down and trees on wires due to strong winds. Flash flood watches were also issued in North Dakota, while flood advisories were issued for central Minnesota. Hague, N.D., reported 1.00 inch sized hail. Fairfield, Iowa, reported a midday total of 1.87 inches of rain. Meanwhile, moisture-rich air and daytime heating triggered thunderstorms across the Deep South and the Southeast. Turnerville, Miss., reported trees down on Highway 528. Biloxi, Miss., reported a midday total of 0.96 inches of rain.

24-31: A stormy weather pattern battered the Northeast on Monday, while monsoonal thunderstorms developed across the Southwest. A cold frontal boundary extended southwestward from the eastern Great Lakes to the southern Plains. As this frontal boundary transitioned eastward, it collided with warm and humid air. This interaction resulted in numerous areas of showers and thunderstorms across New England, the northern Mid-Atlantic, the Midwest, the Tennessee Valley and the middle Mississippi Valley. Severe thunderstorm warnings were scattered across the Ohio Valley, the northern Mid-Atlantic and southern New England. Mount Holly, N.J., reported a midday total of 1.40 inches of rain. Niagara Falls, N.Y., reported a midday total of 1.13 inches of rain. Meanwhile, flash flood warnings and flood advisories were issued in southern Missouri. Food warnings were also issued in southeast Kansas. Springfield, Mo., reported a midday total of 2.08 inches of rain. Great Bend, Kan., reported a midday total of 1.57 inches of rain. Just to the south, an onshore flow from the Gulf of Mexico brought heavy rain and thunderstorms to the western Gulf Coast. Flood advisories were issued in southeast Texas. Orange, Texas, reported a midday total of 1.07 inches of rain. Out west, monsoonal moisture generated showers and thunderstorms across the Four Corners and parts of southern California. Most of the West Coast, the Great Basin and the Pacific Northwest stayed clear of wet weather on Monday.

A plume of moisture moved onshore over the Gulf Coast on Wednesday, while a cold frontal boundary extended from southeast Canada to the northern Plains. A warm and moist air mass surged across the Gulf Coast and interacted with a stationary front. This interaction produced rain and thunderstorms in the southern Plains, the Gulf Coast, the lower Mississippi Valley, the Tennessee Valley and the Mid-Atlantic. Flash flood warnings were issued for north central Tennessee and south central Kentucky, while flood advisories were issued in southern Louisiana. Lafayette, La., reported a midday total of 1.36 inches of rain. Springfield, Mo., reported a midday total of 1.74 inches of rain. Just to the north, a cold frontal boundary generated thunderstorms across the northern Plains and the Midwest. Flood warnings were issued in northeast South Dakota. Ortonville, Minn., reported a midday total of 1.25 inches of rain. Sheboygan, Wis., reported a midday total of 1.00 inches of rain.
Out west, scattered showers and isolated thunderstorms popped up across the Desert Southwest as monsoonal moisture lingered over the region. High pressure kept temperatures 5 to 15 degrees above normal over a large part of the Southwest, the Great Basin and the Northwest.

A low pressure system brought active weather to the Mid-Atlantic on Saturday, while monsoonal thunderstorms impacted the Southwest. An area of low pressure transitioned east northeastward across the Midwest and the interior Mid-Atlantic. This system brought moderate to heavy rain and embedded thunderstorms to many states across the Midwest, the Deep South, the Mid-Atlantic and southern New England. Flood advisories were issued in parts of Michigan, Maryland, Pennsylvania and New Jersey. Johnstown, Pa., reported a midday total of 2.11 inches of rain. Kalamazoo, Mich., reported a midday total of 2.03 inches of rain. A cold frontal boundary associated with this system stretched west southwestward from the Ohio Valley to the southern Plains. Isolated thunderstorms fired up along and near this frontal boundary over the Mississippi Valley, the central Plains and the southern Plains. Ord, Neb., reported a midday total of 2.59 inches of rain. Ponca City, Okla., reported a midday total of 0.95 of an inch of rain. Meanwhile, monsoonal moisture continued to surge across the Southwest. Daytime heating triggered isolated showers and thunderstorms over portions of Intermountain West, the Great Basin and the Desert Southwest. Heat indices spiked across the Southwest due to additional moisture in the atmosphere.

 

Jim G. Munley, jr.
http://www.jimmunleywx.com