Alert archive / Missouri / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 55, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 28, 1994, 8:39 AM CDT for Jefferson County, Saint Francois County, Washington County, Missouri. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Apr 28, 1994, 8:39 AM CDT (13:39 UTC)
- Expired
- Apr 28, 1994, 9:14 AM CDT
- In force
- 35 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Jefferson County, MO, Saint Francois County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 13:38 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
Paducah/Barkley, KY (KPAH), launched 12:00Z, 1.7 hours before the alert went out and 200 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
- 17 J/kg
- Mixed-layer CIN
- -408 J/kg
- Mixed-layer LCL
- 1344 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 314 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 281349 SVRSTL MOC099-187-221-281430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 839 AM CDT THU APR 28 1994 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 930 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...SOUTHERN JEFFERSON COUNTY...ST FRANCOIS COUNTY ...EASTERN WASHINGTON COUNTY AT 838 AM...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS MOVING ACROSS EASTERN WASHINGTON COUNTY...ABOUT 25 MILES NORTHWEST OF FARMINGTON. MOVEMENT WAS NORTHEAST AT 40 TO 45 MILES AN HOUR AND WILL PASS NEAR THE COMMUNITIES OF POTOSI...BONNE TERRE AND DE SOTO BY 915 AM. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. SHEA/FERRY
What forecasters said that day
The local office's own words before this severe thunderstorm 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 28, 5:26 AM CDT, 3 hours 13 minutes before
MOZ047>049-055>065-068>076-079>087-090>092-095-096-098>100-103- ILZ099>102-281200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 525 AM CDT THU APR 28 1994 ...SEVERE THUNDERSTORMS WATCH #165 FOR PORTIONS OF CENTRAL AND SOUTHERN MISSOURI IS IN EFFECT UNTIL 800 AM CDT... AT 515 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADARS CONTINUED TO SHOW A LARGE AREA OF SHOWERS AND THUNDERSTORMS FROM JUST NORTH OF JOPLIN TO THE ST. LOUIS METROPOLITAN AREA. THESE STORM WERE MOVING TO THE EAST TO NORTHEAST AT 40 MPH. THE MAIN THREAT OF SEVERE WEATHER SEEMS TO BE LARGE HAIL AND LOCALLY HEAVY RAIN THIS MORNING. THUS...THE SEVERE THUNDERSTORM WATCH WILL CONTINUE. ALSO...A FLASH FLOOD WATCH CONTINUES FOR PORTIONS OF CENTRAL AND SOUTHERN MISSOURI THIS MORNING. DO NOT TRY TO CROSS A FLOWING STREAM ON FOOT OR WITH YOUR AUTOMOBILE... AS THE DEPTH AND CURRENT STRENGTH MAY BE TO HARD TO JUDGE. MOST FLASH FLOOD DEATHS OCCUR AT NIGHT WHEN IT IS HARD TO DETERMINE FLOODED CONDITIONS. . STAY TUNED TO LOCAL MEDIA OR NOAA WEATHER RADIO FOR THE LASTEST WARNINGS AND STATEMENTS. METZE
Special weather statement, Apr 28, 7:06 AM CDT, 1 hour 33 minutes before
MOZ072-083-062-084-065-071-099-061-075-074-063-064-060-073-ILZ098- 099-100-102-101-281300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 704 AM CDT THU APR 28 1994 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS UNTIL 800 AM... AT 700 AM...A LINE OF THUNDERSTORMS PRODUCING VERY HEAVY RAINS EXTENDED FROM JUST WEST OF ST LOUIS THROUGH WASHINGTON COUNTY MISSOURI AND INTO SOUTH CENTRAL MISSOURI. THESE STORMS WERE MOVING NORTHEAST AT 40 TO 45 MILES AN HOUR. THESE STORMS ARE PART OF A LARGE AREA OF LIGHTER RAIN SHOWERS THAT COVERS ALMOST THE ENTIRE BI-STATE REGION EARLY THIS MORNING. ALTHOUGH NO REPORTS OF LARGE HAIL OR DAMAGING WIND HAVE BEEN RECEIVED FROM THESE STORMS...VERY HEAVY RAINFALL CONTINUES TO CAUSE FLASH FLOOD PROBLEMS. THESE STORMS STILL HAVE THE POTENTIAL FOR LARGE HAIL OR DAMAGING WIND THOUGH SO LISTEN FOR POSSIBLE WARNINGS. IF A THREATENING STORM MOVES INTO YOUR AREA...STAY AWAY FROM WINDOWS AND REMAIN INDOORS. BE AWARE OF POSSIBLE FLASH FLOODING AS WELL. MOTORISTS SHOULD AVOID FLOODED STRETCHES OF HIGHWAYS. SHEA
Special weather statement, Apr 28, 7:23 AM CDT, 1 hour 16 minutes before
MOZ047-048-055>057-068>070-281315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 719 AM CDT THU APR 28 1994 ...A SECTION OF SEVERE THUNDERSTORM WATCH #165 HAS BEEN CANCELLED... SEVERAL COUNTIES IN CENTRAL MISSOURI HAVE BEEN CANCELLED FROM THE SEVERE THUNDERSTORM WATCH THAT IS IN EFFECT UNTIL 800 AM FOR MUCH OF CENTRAL AND SOUTHERN MISSOURI. THE FOLLOWING COUNTIES ARE NO LONGER IN A SEVERE THUNDERSTORM WATCH: MONITEAU COLE MORGAN BENTON HICKORY CAMDEN MILLER PULASKI A FLASH FLOOD WATCH DOES REMAIN IN EFFECT FOR THIS ENTIRE AREA THOUGH FOR THE REMAINDER OF THE MORNING. ALTHOUGH LARGE HAIL AND GUSTY WIND ARE NO LONGER A THREAT...HEAVY RAIN MAY PRODUCE FLASH FLOODING. USE EXTRA CAUTION NEAR LOW WATER BRIDGES AND AROUND CREEKS THAT MAY BE CLOSE TO BANKFUL. SHEA
Special weather statement, Apr 28, 8:08 AM CDT, 31 minutes before
MOZ045>108-ILZ098>102-281415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 806 AM CDT THU APR 28 1994 ...THE SEVERE THUNDERSTORM WATCH FOR PARTS OF CENTRAL AND SOUTHERN MISSOURI HAS
Special weather statement, Apr 28, 8:33 AM CDT, 6 minutes before
MOZ072>076-082>115-281530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 828 AM CDT THU APR 28 1994 ...A NEW SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR SOUTHERN MISSOURI AND SECTIONS OF SOUTHERN ILLINOIS... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR MOST OF SOUTHERN MISSOURI AND SECTIONS OF SOUTHWEST ILLINOIS UNTIL 200 PM. THIS WATCH INCLUDES THE CITIES OF CAPE GIRARDEAU...POPLAR BLUFF...SPRINGFIELD...JOPLIN...WEST PLAINS AND THE ENTIRE MISSOURI BOOTHEEL. MORE THUNDERSTORMS ARE MOVING INTO SOUTHERN MISSOURI AS OF 820 AM. CONDITIONS REMAIN RIGHT FOR SEVERE THUNDERSTORM DEVELOPMENT...INCLUDING POSSIBLE LARGE HAIL AND DAMAGING WIND. FREQUENT LIGHTNING AND VERY HEAVY RAIN CAN ALSO BE EXPECTED IF STORMS MOVE INTO YOUR AREA. A FLASH FLOOD WATCH CONTINUES THIS MORNING FOR PARTS OF SOUTHERN MISSOURI AS WELL. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SHEA
Special weather statement, Apr 28, 8:38 AM CDT, 1 minute before
MOZ072>076-082>115-281530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 828 AM CDT THU APR 28 1994 ...THE SEVERE THUNDERSTORM WATCH THAT WAS ISSUED FOR SOUTHERN MISSOURI AND SECTIONS OF SOUTHWEST ILLINOIS SHOULD BE A TORNADO WATCH... THE SEVERE THUNDERSTORM WATCH #168 SHOULD BE A TORNADO WATCH INSTEAD. IT WAS ERRONEOUSLY SENT OUT AS A SEVERE THUNDERSTORM WATCH. THIS TORNADO WATCH IS IN EFFECT UNTIL 200 PM...AND INCLUDES THE CITIES OF CAPE GIRARDEAU...POPLAR BLUFF...SPRINGFIELD...JOPLIN...WEST PLAINS AND THE ENTIRE MISSOURI BOOTHEEL. MORE THUNDERSTORMS ARE MOVING INTO SOUTHERN MISSOURI AS OF 820 AM. CONDITIONS REMAIN RIGHT FOR SEVERE THUNDERSTORM DEVELOPMENT...INCLUDING POSSIBLE LARGE HAIL AND DAMAGING WIND. TORNADOES ARE ALSO POSSIBLE. FREQUENT LIGHTNING AND VERY HEAVY RAIN CAN ALSO BE EXPECTED IF STORMS MOVE INTO YOUR AREA. A FLASH FLOOD WATCH CONTINUES THIS MORNING FOR PARTS OF SOUTHERN MISSOURI AS WELL. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SHEA
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 | Saint Charles, Saint Louis | 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, 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
Severe Thunderstorm Warnings in Missouri, 1994Every severe thunderstorm 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.