NATIONAL WEATHER SUMMARY
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. Scattered monsoonal thunderstorms popped up across parts of the Intermountain West and the Desert Southwest. Heat advisories were issued in the southern Plains and the lower Mississippi Valley due to warm and humid air over the region. Houston, Texas, recorded a midday high of 92 degrees with a heat index of 102 degrees. Most areas west of the Continental Divide experienced dry weather on Monday. Palm Springs, Calif., recorded a midday high of 102 degrees. Portland, Ore., recorded a midday high of 60 degrees.
Active weather impacted several areas from the Intermountain West to the Midwest on Wednesday, while above normal temperatures affected the southern Plains. Extreme heat impacted locations from the southern high Plains to the southern Mid-Atlantic. Excessive heat warnings were issued in northeast Oklahoma. Heat advisories were issued across a handful of states stretching from eastern New Mexico to the Carolinas. Kingsville, Texas, recorded a midday high of 92 degrees with a heat index of 108 degrees. Tulsa, Okla., recorded a midday high of 90 degrees with a heat index of 101 degrees.
10-16: A low pressure system drifted slowly eastward across the northern high Plains and south central Canada. This system was accompanied by below normal temperatures, which supported high elevation snow in the northern Rockies. Pinedale, Wyo., recorded a morning low of 32 degrees with a wind chill factor of 26 degrees. Meanwhile, a ridge of high pressure brought warm and dry weather to the Southwest. Heat advisories were issued in eastern New Mexico, northern Texas and Oklahoma. Carlsbad, N.M., recorded a midday high of 103 degrees. Pecos, Texas, recorded a midday high of 102 degrees.
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. 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. High pressure brought hot and dry conditions to the Southwest and the southern Plains. Heat advisories were issued in eastern New Mexico, western Texas and eastern Oklahoma. Pecos, Texas, recorded a midday high of 107 degrees.
17-23: Stormy weather affected portions of the northern Plains and the Mississippi Valley on Wednesday, while monsoonal moisture surged across the Four Corners. Most of the West Coast experienced dry weather on Wednesday. Los Angeles, Calif., recorded a midday high of 79 degrees. Seattle, Wash., recorded a midday high of 73 degrees.
High pressure kept extreme heat in the picture for a large portion of the Plains, the Midwest and the Deep South on Friday. Excessive heat warnings were issued in South Dakota, Nebraska, Kansas, southern Minnesota, Iowa, Missouri, eastern Arkansas, northwest Mississippi, western Tennessee, western Kentucky, Illinois, western Wisconsin and southwest Ohio. Newport, Ark., recorded a midday high of 97 degrees with a heat index of 113 degrees. Extreme heat also affected the Southwest on Friday. Excessive heat warnings and heat advisories were issued in parts of southern California and Arizona. Palm Springs, Calif., recorded a midday high of 111 degrees. Las Vegas, Nev., recorded a midday high of 108 degrees.
24-31: A stormy weather pattern battered the Northeast on Monday, while monsoonal thunderstorms developed across the Southwest.
Jim G. Munley, jr.
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