National Weather Summary for Monday April 20, 2009
NATIONAL WEATHER SUMMARY:
Across the eastern half of the country, a slow-moving low
pressure system moved out of the mid-Mississippi Valley and into
the Ohio Valley. Thunderstorms developed across Arkansas and
Mississippi by early afternoon and moved rapidly eastward across
the Tennessee Valley and the South. Severe lines of thunderstorms
dropped hail across northern Mississippi and Alabama. Reports of
golfball size hail were noted in Nettleton, Miss. yesterday
afternoon. By evening, severe thunderstorms began producing
tornadoes across central Alabama. Houses were damaged and numerous trees were uprooted in Perry and Shelby counties in Alabama.
Overnight, weakening thunderstorms pushed into Georgia and the western Carolinas. Farther north, moderate to heavy rain showers rotated around this low pressure system across Missouri to the lower Great Lakes. Numerous reports of over an inch within 24 hours were noted. Louisville, Ky. reported 1.19 inches while Springville,
Mo. came in at 2 inches for the day. Overnight, heavy showers
spread into Lower Michigan and Wisconsin while snow was being
reported across northern Wisconsin, Upper Michigan, and the
arrowhead of Minnesota.
Across the western United States, mostly dry conditions were found across the southern Plains, Rockies, and West Coast. A strong ridge of high pressure brought warm temperatures to most of the
west. Ninety degree highs were reported from southern Arizona to
northern California. Dozens of records were broken across
California and Oregon.
Some new record high temperatures across Calif.
86 San Francisco Airport
88 San Francisco
94 Downtown L.A.
97 Long Beach
WEATHER EXTREMES FOR YESTERDAY:
HIGHEST TEMPERATURE (DEGREES F).............102 Anaheim, Calif.
HIGHEST HEAT INDEX (DEGREES F)...............93 Mcallen, Texas
LOWEST TEMPERATURE (DEGREES F)...............15 Stanley, Idaho
LOWEST WIND CHILL (DEGREES F).................4 Leadville, Colo.
HIGHEST WIND GUST (MPH)......................70 Moulton, Ala.
HIGHEST PRECIPITATION (INCHES).............2.00 Springville, Mo.
ON THIS DATE IN HISTORY:
In 1901, a spring storm dumped 12.7 inches of snow on
Pittsburgh, Penn., a record for April.
In 1920, a tornado outbreak killed 219 people in Mississippi and Alabama.
In 1989, 23 cities from the Southwest to the Great Plains
reported new record highs. Tucson, Ariz. reported an April record
high of 104 degrees.
Filed by DTN-Meteorlogix