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Science Forum Index » Geology - Meteorology Forum » National Storm Summary May 2007
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 Posted: Tue Jun 12, 2007 7:29 pm |
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NATIONAL STORM SUMMARY
MAY 2007
1st-5th...Severe weather and flash flooding once again pounded the South
Central states Wednesday with a series of upper-level disturbances
overhead. The first disturbance that has recently been the culprit
behind intense weather across the region continued to deliver showers
and thunderstorms from the lower Ohio Valley into eastern Kansas and
Oklahoma. As rain from this unsettled weather attempted to seep into
an already over-saturated soil, more flooding problems resulted.
Numerous severe thunderstorms, including ten tornadoes, battered areas
from southeastern New Mexico to northeastern and central Texas
Wednesday with the arrival of a second disturbance. Some of the most
intense thunderstorms also produced hail larger than the size of golf
balls and wind gusts over 74 mph, the speed of a lower-end category
one hurricane. A frontal boundary that extended away from these
disturbances also ignited thunderstorms across Kentucky into the
Virginias. The thunderstorms were locally severe with damaging winds
and hail. To the south of the front, unseasonably warm air remained
over the Southeast, while an area of high pressure north of the
boundary kept temperatures closer to typical early May values across
the Northeast. Meanwhile, southeast winds howled across the northern
Plains ahead of a large storm that impacted the Western states.
Compared to the recent record warmth that dominated many areas this
weekend, the weather was dramatically different across the West
Wednesday since the storm delivered periods of rain and mountain snow
to the Northwest and northern Great Basin states; gusty thunderstorms
also developed over the northern Rockies in the afternoon. The arrival
of cooler air following the storm's cold front was very noticeable
from the interior Northwest to central California. After warming to a
high of 83 degrees Tuesday, Boise, Idaho, saw a more-seasonable high
of 62 degrees Wednesday. South of the wet weather, strong wind gusts
blasted the Southwest.
Matt Gerard, lead forecaster for the National Weather Service in Dodge
City, said an off-duty Weather Service employee saw a "huge wedge"
tornado travel north across the countryside toward Greensburg on
Friday.
No fatalities were immediately reported, but law enforcement officials
told Wichita television station KSNW that several people were injured
and that officers were going door-to-door in Greensburg looking for
anyone trapped or injured. As of midnight, six people from Greensburg
had been admitted to Pratt Regional Medical Center, the nearest
hospital. Kim Stivers, the hospital's director of community services,
said the patients had a range
of injuries and the hospital was expecting to receive more injured.
The tornado was one of at least two that developed in and around
largely rural Kiowa County and moved northeastward toward other
settlements. Law enforcement agencies from surrounding counties and
cities, including Dodge City, headed for Greensburg to assist.
Elsewhere on Friday, three small tornadoes touched down in rural
southwestern Illinois, but officials said there were no reports of
injury or damage. In Colorado, severe thunderstorms prompted tornado
warnings for at least six counties in the eastern plains, but
officials
said there were no confirmed reports of tornadoes or damage.
6th-12th...In the central region, a low pressure system located in the
Great Plains produced showers and thunderstorms from Texas to
Illinois. Hail and gusty winds were reported in Oklahoma, Missouri,
and Texas as severe thunderstorms developed. Flooding was a concern
over much of the Plains and Midwest. Over 3 inches of rain fell in the
eastern half of Oklahoma since midnight. Showers and more isolated
thunderstorms were reported over the Upper Midwest and western Great
Lakes.
13th-19th...In the East, a cold front brought afternoon thunderstorms to
the Florida Peninsula. These storms brought frequent lightning, gusty
winds, hail and brief heavy downpours. Some areas had heavy rainfall
associated with heavy storms. Titusville, Florida received 1.49 inches
of rainfall, while Fort Myers, Florida reported 4.54 inches of
rainfall. In addition, large hail was reported in several locations.
Hail measuring 1.50 inches in diameter was reported in Vanderbilt
Beach, Florida. Further north, a few thunderstorms impacted the
Northern Great Lakes, with gusty winds, large hail and heavy rainfall.
Hail measuring up to 1.25 inches in diameter was reported near
Newberry, Michigan, with numerous other hail reports noted. In the
central states, a strong storm system and trailing cold front brought
a long line of thunderstorms from the Upper Midwest down through the
Central Plains. Some of these became severe, with large hail, frequent
lightning, locally heavy downpours, and even a few isolated tornadoes.
Numerous reports of hail measuring an inch or more were noted across
Wisconsin, Iowa, Nebraska, and Kansas. Hail measuring 1.75 inches in
diameter was reported in Tamora, Nebraska and in Goehner, Nebraska.
High wind gusts also occurred with these storms. A 70 mph wind gust
was reported in York, Nebraska. Heavy downpours were also noted, as
1.11 inches of rain fell in Aurora, Nebraska, and 1.18 inches fell in
Ashland, Wisconsin. Further south, the Southern Plains and Lower
Mississippi Valley also experienced scattered thunderstorms with some
isolated severe reports. In the West, widely scattered showers and
thunderstorms impacted the Central and Southern High Plains and
Central Rockies. Some of these storms became severe, with hail, gusty
winds, frequent lightning, and heavy downpours. Pea to marble sized
hail was reported in several locations, with 1 inch hail reported in
Fort Collins, Colorado. Heavy rainfall also occurred in areas such as
Lupton, Colorado, where a half inch of rain fell in 5 minutes.
he Nation's Weather
Associated Press - May 14, 2007 9:03 PM ET
WEATHERBANK, INC EDMOND, OK TIME 9:00 PM EDT DATE: 05/14/07
WEATHER EXTREMES SO FAR TODAY:
HIGHEST TEMPERATURE (DEGREES F)...........102 Gila Bend, AZ
HIGHEST HEAT INDEX (DEGREES F)............103 Natchitoches, LA
LOWEST TEMPERATURE (DEGREES F).............24 Stanley, ID
LOWEST WIND CHILL (DEGREES F)..............23 Dillon, MT
HIGHEST WIND GUST (MPH)....................71 Dickinson, ND
HIGHEST PRECIPITATION (INCHES)...........4.54 Fort Myers, FL
NATIONAL WEATHER SUMMARY:
In the East, a cold front brought afternoon thunderstorms to the
Florida Peninsula. These storms brought frequent lightning, gusty
winds, hail and brief heavy downpours. Some areas had heavy rainfall
associated with heavy storms. Titusville, Florida received 1.49 inches
of rainfall, while Fort Myers, Florida reported 4.54 inches of
rainfall. In addition, large hail was reported in several locations.
Hail measuring 1.50 inches in diameter was reported in Vanderbilt
Beach, Florida. Further north, a few thunderstorms impacted the
Northern Great Lakes, with gusty winds, large hail and heavy rainfall.
Hail measuring up to 1.25 inches in diameter was reported near
Newberry, Michigan, with numerous other hail reports noted. Elsewhere,
high pressure dominated the Ohio Valley, Northeast, Mid-Atlantic and
Southeast with clear to partly cloudy skies.
In the central states, a strong storm system and trailing cold front
brought a long line of thunderstorms from the Upper Midwest down
through the Central Plains. Some of these became severe, with large
hail, frequent lightning, locally heavy downpours, and even a few
isolated tornadoes. Numerous reports of hail measuring an inch or more
were noted across Wisconsin, Iowa, Nebraska, and Kansas. Hail
measuring 1.75 inches in diameter was reported in Tamora, Nebraska and
in Goehner, Nebraska. High wind gusts also occurred with these storms.
A 70 mile-per-hour wind gust was reported in York, Nebraska. Heavy
downpours were also noted, as 1.11 inches of rain fell in Aurora,
Nebraska, and 1.18 inches fell in Ashland, Wisconsin. Further south,
the Southern Plains and Lower Mississippi Valley also experienced
scattered thunderstorms with some isolated severe reports. The Mid-
Mississippi Valley escaped the severe weather as high pressure
produced partly cloudy skies for the region.
In the West, widely scattered showers and thunderstorms impacted the
Central and Southern High Plains and Central Rockies. Some of these
storms became severe, with hail, gusty winds, frequent lightning, and
heavy downpours. Pea to marble sized hail was reported in several
locations, with 1 inch hail reported in Fort Collins, Colorado. Heavy
rainfall also occurred in areas such as Lupton, Colorado, where a half
inch of rain fell in 5 minutes. The Pacific Northwest, Great Basin,
Northern Rockies, California, and the Desert Southwest had clear to
partly cloudy skies.
20th-26th...Across the central portion of the nation on Monday, a broad
trough of low pressure pushed across the Rocky Mountain range and into
the Plains region, generating widespread showers and strong to severe
thunderstorms across the Dakotas, western portions of the central
Plains, and the southern Plains. Gusty winds, frequent lightning,
sizable hail, and heavy downpours of rain were the main threats with
this activity through the early evening hours. Further east, scattered
showers and isolated thunderstorms impacted western portions of the
lower Mississippi Valley this afternoon, but only light precipitation
was reported. |
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