Figure 1: SPC Storm Report Map for May 25th, 2004.
Figure 2: SPC Storm Report Map for May 26th, 2004.
Figure 3: SPC Storm Report Map for May 27th, 2004.
Figure 4: Large hail covering the ground.  Photo courtesy of KSDK Channel 5.
Figure 5: Broken skylight due to large hail.  Photo courtesy of KSDK Channel 5.
Figure 6: Flooding occurring on Theodosia Ave. in downtown St. Louis.  Photo courtesy of KSDK Channel 5.
Figure 7: Flooding on Highway 40/I-64. Photo courtesy of KSDK Channel 5.
Figure 8: Flooding on Highway 40/I-64. Photo courtesy of KSDK Channel 5.
Figure 9: Flooding on Highway 40/I-64. Photo courtesy of KSDK Channel 5.
Figure 10: Flooding on Highway 40/I-64. Photo courtesy of KSDK Channel 5.
Figure 11: Hail covering the ground at Mary Institute and Saint Louis Country Day School. Photo courtesy of KSDK Channel 5.
Figure 12: Car with major hail damage at Mary Institute and Saint Louis Country Day School. Photo courtesy of KSDK Channel 5.
Figure 13: Large hail at Mary Institute and Saint Louis Country Day School. Photo courtesy of KSDK Channel 5.
Figure 14: Hail covering the ground at Mary Institute and Saint Louis Country Day School. Photo courtesy of KSDK Channel 5.
Figure 15: More car damage at Mary Institute and Saint Louis Country Day School. Photo courtesy of KSDK Channel 5.
Figure 16: Flooding in Brentwood. Photo courtesy of KSDK Channel 5.
Figure 17: Flooding on I-55. Photo courtesy of KSDK Channel 5.
Figure 18: Flooding on I-55. Photo courtesy of KSDK Channel 5.
Figure 19: Flooding on I-55. Photo courtesy of KSDK Channel 5.
Figure 20: Flooding on I-55. Photo courtesy of KSDK Channel 5.
Figure 21: Fire truck driving through flood waters on I-55. Photo courtesy of KSDK Channel 5.
Figure 22: Flooding on Broadway, downtown St. Louis. Photo courtesy of KSDK Channel 5.
Figure 23: Flooding on Broadway, downtown St. Louis. Photo courtesy of KSDK Channel 5.
Figure 24: Flooding on Highway 40/I-64. Photo courtesy of KSDK Channel 5.
Figure 25: Flooding on I-55. Photo courtesy of KSDK Channel 5.
Figure 26: Tree blown down onto a house. Photo courtesy of KSDK Channel 5.
Figure 27: Tree blown down onto a house. Photo courtesy of KSDK Channel 5.
Figure 28: Another picture od tree that fell onto a house. Photo courtesy of KSDK Channel 5.
Figure 29: Very large and oddly shaped hail that fell near Washington, MO...compared to a quarter. Photo courtesy of KSDK Channel 5.

NWS
St. Louis, Missouri

Several Severe Storm Events
Over The Region
May 25th through 27th, 2004

During the last week of May 2004 several rounds of severe thunderstorms brought large destructive hail, severe winds, tornadoes, and flooding to the bi-state region.

A wavering frontal boundary draped across Missouri and Illinois was the focus for the thunderstorm development May 24th-27th, 2004. Upper level dynamics, such as the jet stream, were collocated with sufficient instability to cause some of the thunderstorms to become severe.

Storm surveys conducted across northeast Missouri and west central Illinois have led to the confirmation of an F0 tornado track in Marion county Missouri and one F0 and two F1 tornado tracks in Pike county Illinois from storms that occurred on Monday, May 24th. Damage was limited to trees, and a few homes, in which the trees were blown into. No injuries or fatalities were reported.

The tornadic thunderstorms combined to form a squall line that raced southeast across the St. Louis metropolitan area causing widespread minor wind damage in the late evening hours of the 24th and the early morning hours of the 25th. Later during the afternoon hours of the 25th, a large severe thunderstorm moved across the St. Louis Metropolitan area dumping penny to golf ball size hail and up to 3 inches of rain in just 30 minutes. The cities of Creve Coeur, Town and Country, Kirkwood, and St. Louis were the hardest hit by the storm. Over 60 reports of property damage due to hail and severe wind gusts were reported to the National Weather Service from Saint Louis County alone. The heavy rainfall caused numerous roads and parking lots to flood, including Interstate 40/64 at Hampton Ave.

Several rounds of severe thunderstorms developed on Wednesday, May 26th. Numerous reports of large hail, severe wind gusts, and local flooding were received at the weather office. It only got worse on the evening of May 27th, when a strong line of thunderstorms spawned several small tornadoes, produced hail, damaging winds and torrential rains. Flooding was widespread across the Metro Area with storm totals over 2 inches common.

The National Weather Service Office in St. Louis issued nearly 450 watches, warnings and statements during these 5 days. Timely warnings, terrific coordination between our office and emergency management, great communications with the media, and a raised awareness by the public helped everyone to get through this event without a single fatality or reported injury.

SPC Storm Report Map for May 25th, 2004
SPC Storm Report Map for May 26th, 2004
SPC Storm Report Map for May 27th, 2004

Large hail covering the ground

Broken skylight due to large hail

Flooding on Thedosia Avenue in downtown St. Louis

Flooding on Highway 40/I-64

Flooding on Highway 40/I-64

Flooding on Highway 40/I-64

Flooding on Highway 40/I-64

Hail covering the ground

Car with major hail damage

Large hail

Hail covering the ground

Car with major hail damage

Flooding in Brentwood

Flooding on I-55

Flooding on I-55

Flooding on I-55

Flooding on I-55

Flooding on I-55

Flooding on Broadway downtown

Flooding on Broadway downtown

Flooding on Highway 40/I-64

Flooding on I-55

Tree blown down onto a house

Tree blown down onto a house

Another picture of tree on house

Very large hail

     


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