Alert archive / Missouri / Flash Flood Warnings in 1994
Flash Flood Warning 19, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 28, 1994, 2:21 AM CDT for Saint Charles County, Saint Louis County, Missouri. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 28, 1994, 2:21 AM CDT (07:21 UTC)
- Expired
- Apr 28, 1994, 6:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
The radar
The St Louis radar (KLSX), 11 km from the middle of the area, began a volume at 07:23 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Springfield, MO (KUMN), launched 00:00Z, 7.4 hours before the alert went out and 349 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 493 m²/s²
- 0-3 km storm-relative helicity
- 792 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 280724 FFWSTL MOC183-189-510-281100- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 221 AM CDT THU APR 28 1994 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...ST CHARLES COUNTY...ST LOUIS COUNTY AND THE INDEPENDENT CITY OF ...ST LOUIS CITY AT 220 AM...WEATHER SERVICE DOPPLER INDICATED VERY HEAVY RAINS FALLING ACROSS WESTERN SECTIONS OF THE ST LOUIS METRO AREA. THE STORMS EXTENDED FROM JUST WEST OF DOWNTOWN ST LOUIS...TO ABOUT 45 MILES SOUTHWEST OF ST LOUIS. THIS LINE OF STORMS WAS MOVING VERY LITTLE...WHILE EACH STORM IN THE LINE WAS MOVING EAST-NORTHEAST AT 35 TO 40 MILES AN HOUR. THIS WAS ALLOWING SEVERAL STORMS TO PASS OVER THE SAME AREA. RAINFALL ESTIMATES FROM RADAR INDICATE AT SOME AREAS MAY BE RECEIVING UP TO AN INCH OF RAIN IN AN HOURS TIME...AND SEVERAL MORE HOURS OF HEAVY RAIN ARE EXPECTED. MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TRUETT/METZE
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 27, 10:21 PM CDT, 4 hours before
MOZ049-051-058-059-280420- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MISSOURI 1019 PM CDT WED APR 27 1994 ...STRONG THUNDERSTORMS ARE MOVING ACROSS CENTRAL MISSOURI... AT 1015PM CDT WEATHER RADAR SHOWED AN AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER PART OF CENTRAL MISSOURI. THE AREA WAS 15 MILES WIDE AND EXTENDED FROM 15 MILES SOUTHEAST OF JEFFERSON CITY TO 30 MILES EAST OF JEFFERSON CITY. THESE STORMS ARE CAPABLE OF VERY HEAVY RAIN AND SMALL HAIL AS THEY MOVE TO THE EAST AND NORTHEAST AT 35MPH. RESIDENTS IN OSAGE...GASCONADE..AND MONTGOMERY COUNTIES SHOULD BE PREPARED FOR THESE STORMS TO MOVE THROUGH THEIR AREA OVER THE NEXT HOUR. IF YOU ARE OUTDOORS...LMOVE TO A PLACE OF SHELTER IMMEDIATELY IF A STORM APPROACHES. MOTORISTS SHOULD REMAIN ALERT FOR REDUCED VISIBILITIES DURING DOWNPOURS OF RAIN. STREETS MAY FLOOD QUICKLY. REAUGH
Special weather statement, Apr 27, 10:54 PM CDT, 3 hours 27 minutes before
MOZ052-060>065-ILZ098>102-280450- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1052 PM CDT WED APR 27 1994 ...THUNDERSTORMS REDEVELOPING OVER THE ST LOUIS AREA... SINCE 1015 PM...THUNDERSTORMS HAVE BEEN REDEVELOPING OVER EAST CENTRAL MISSOURI. AT 1050 PM...THE STORMS EXTENDED FROM NEAR DOWNTOWN ST LOUIS...TO ABOUT 20 MILES WEST OF WASHINGTON...NEAR THE FRANKLIN...GASCONADE COUNTY LINE. THESE STORMS WILL BE MOVING EAST-NORTHEAST AT AROUND 30 MILES AN HOUR. WHILE NO SEVERE WEATHER IS CURRENTLY EXPECTED...THE STRONGER STORMS WILL BE PRODUCING ISOLATED AREAS OF VERY HEAVY RAIN...ALONG WITH SOME SMALL HAIL...ACROSS THE ST LOUIS METRO AREA BETWEEN 1050 PM AND MIDNIGHT. TRUETT
Special weather statement, Apr 27, 11:42 PM CDT, 2 hours 39 minutes before
ILZ095>102-280545- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1140 PM CDT WED APR 27 1994 ...THUNDERSTORMS CONTINUE TO DEVELOP ACROSS THE BI-STATE AREA... SHOWERS AND THUNDERSTORMS CONTINUE TO REDEVELOP ACROSS THE BI-STATE AREA LATE THIS EVENING. AT 1140 PM...THE STRONGEST STORMS EXTENDED FROM NEAR DOWNTOWN ST LOUIS...TO ABOUT 15 MILES SOUTHWEST OF WASHINGTON...IN FRANKIN COUNTY. THE STORMS WERE MOVING EAST-NORTHEAST AT 30 MILES AN HOUR...AND WILL BRING BRIEF HEAVY RAINS...AND PERHAPS SOME SMALL HAIL...TO THE CITY OF ST LOUIS...AS WELL AS TO SECTIONS OF ST LOUIS...FRANKLIN...AND JEFFERSON COUNTIES IN MISSOURI...AND MONROE...ST CLAIR...AND MADISON COUNTIES IN ILLINOIS...BETWEEN 1140 PM AND 1230 PM. TRUETT
Special weather statement, Apr 28, 12:03 AM CDT, 2 hours 18 minutes before
MOZ053>057-066>069-077>081-088>096-101>105-280705- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1201 AM CDT THU APR 28 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHWEST MISSOURI UNTIL 5 AM... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR SOUTHWEST MISSOURI UNTIL 5 AM THIS MORNING. SOME OF THE CITIES INCLUDED IN THE WATCH ARE CASSVILLE..CLINTON..JOPLIN... NEVADA...AND STOCKTON. THE LATEST SATELLITE AND UPPER LEVEL WIND DATA SUGGESTS THAT THE THUNDERSTORMS NOW OCCURRING OVER WESTERN MISSOURI...AS WELL AS OVER SOUTHEAST KANSAS AND NORTHEAST OKLAHOMA...WILL BE INCREASING IN INTENSITY DURING THE NEXT FEW HOURS. IN ADDITION TO THE THREAT OF LARGE HAIL AND DAMAGING WINDS...REMEMBER THAT SEVERE THUNDERSTORMS OFTEN PRODUCE HEAVY RAIN THAT CAN LEAD TO FLASH FLOODING. BECAUSE OF THIS THREAT...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR SOUTHWEST MISSOURI FOR THE REMAINDER OF TONIG^HT...AND INTO THURSDAY MORNING. PEOPLE THROUGHOUT SOUTHWEST MISSOURI ARE URGED TO FOLLOW WEATHER DEVELOPMENTS THROUGHOUT THE NIGHT BY MONITORING NOAA WEATHER RADIO....OR LOCAL RADIO AND TV STATIONS. TRUETT
Special weather statement, Apr 28, 12:49 AM CDT, 1 hour 32 minutes before
MOZ024-025-032-033-039>042-045>051-055>059-068>070-280645 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 1245 AM CDT THU APR 28 1994 ...STRONG THUNDERSTORMS WERE MOVING THROUGH THE SOUTH HALF OF CENTRAL MISSOURI... AT 1240 AM STRONG THUNDERSTORMS WERE SCATTERED FROM THE NORTH END OF THE LAKE OF THE OZARKS TO JEFFERSON CITY AND THEN EAST TO HERMANN IN GASCONADE COUNTY AND BELLE IN MARIES COUNTY. THE STRONGEST STORMS WERE LOCATED 35 MILES EAST AND 25 MILES SOUTHEAST OF JEFFERSON CITY. THESE STRONGEST STORMS MAY PRODUCE SMALL HAIL AND STRONG GUSTY WINDS. ALL OF THE THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAIN WHICH MAY CAUSE FLOODING OF LOW LYING AREAS IN TOWNS AND ON COUNTY ROADS. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. IF YOU LIVE IN FLOOD PRONE AREAS BE ALERT TO POSSIBLE FLOODING. IF YOU ARE DRIVING...SLOW DOWN WHEN CROSSING LOW BRIDGES OR LOW SPOTS IN TOWNS. KENNEDY
Special weather statement, Apr 28, 1:00 AM CDT, 1 hour 21 minutes before
MOZ060>065-ILZ100>102-280800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1258 AM CDT THU APR 28 1994 ...THUNDERSTORMS CONTINUE TO FORM OVER THE BI-STATE AREA... AT 1255 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ACROSS EAST CENTRAL MISSOURI. THE STORMS EXTEND FROM 20 MILES WEST OF ST. CHARLES TO 15 MILES WEST OF WASHINGTON. STORMS WERE MOVING TO THE EAST TO NORTHEAST AT 35 TO 40 MPH. THESE STORMS WILL BRING SMALL HAIL AND ISOLATED AREAS OF HEAVY RAIN ACROSS THE MISSOURI COUNTIES OF WARREN...FRANKLIN...JEFFERSON...ST. CHARLES...ST. LOUIS AND ST. LOUIS CITY...AND THE ILLINOIS COUNTIES OF MADISON...ST. CLAIR...AND MONROE. THIS ACTIVITY WILL OCCUR BETWEEN ONE AND THREE THIS MORNING. REMEMBER...LIGHTNING MAY STRIKE SOME MILES AWAY FROM THE PARENT CLOUD. PRECAUTIONS SHOULD BE TAKEN EVEN THOUGH THE THUNDERSTORM IS NOT DIRECTLY OVERHEAD. ST/DM
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:19 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 56 min |
| Apr 28, 1:23 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Saint Louis | 47 min |
| Apr 28, 1:58 AM CDT | Flash Flood Warning | LSX | Franklin | 4 hr |
| Apr 28, 2:21 AM CDT | Flash Flood Warning | LSX | City of Saint Louis | 4 hr |
| Apr 28, 3:30 AM CDT | Flash Flood Warning | LSX | Franklin | 5 hr |
| Apr 28, 5:12 AM CDT | Flash Flood Warning | LSX | Crawford, Phelps | 4 hr |
| Apr 28, 5:55 AM CDT | Flash Flood Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 4 hr |
| Apr 28, 5:55 AM CDT | Flash Flood Warning | LSX | Franklin | 4 hr |
| Apr 28, 6:35 AM CDT | Flash Flood Warning | LSX | Jefferson | 4 hr |
| Apr 28, 8:39 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Francois, Washington | 35 min |
| Apr 28, 11:25 AM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 47 min |
| Apr 28, 12:17 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 43 min |
| Apr 28, 12:17 PM CDT | Tornado Warning | LSX | Saint Francois | 32 min |
Nearby
Flash Flood Warnings in Missouri, 1994Every flash flood warning in 1994
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.