Alert archive / Missouri / Flash Flood Warnings in 1994
Flash Flood Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 11, 1994, 1:18 AM CDT for 4 counties in Missouri. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 11, 1994, 1:18 AM CDT (06:18 UTC)
- Expired
- Apr 11, 1994, 6:15 AM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Jefferson County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 81 km from the middle of the area, began a volume at 06:19 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 00:00Z, 6.3 hours before the alert went out and 190 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
- 585 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 139 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 110621 FFWSTL MOC099-187-186-221-111115- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 118 AM CDT MON APR 11 1994 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 615 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...JEFFERSON COUNTY...ST FRANCOIS COUNTY ...STE GENEVIEVE COUNTY...WASHINGTON COUNTY AT 115 AM CDT A CLUSTER OF SHOWERS AND THUNDERSTORMS WAS LOCATED ACROSS MUCH OF EAST CENTRAL MISSOURI. SOME OF THE HEAVIER STORMS WERE LOCATED NEAR BONNE TERRE AND JUST SOUTH OF STE. GENEVIEVE. THESE CELLS WERE MOVING TO THE NORTHEAST AT 30 MPH. NATIONAL WEATHER SERVICE DOPPLER PRECIPITATION ESTIMATES INDICATE THAT PERHAPS ONE HALF TO ONE AND ONE HALF INCHES OF RAINFALL HAVE FALLEN SINCE 9 PM IN THESE AREAS. THIS RAINFALL IN ADDITION TO THE TWO INCHES WHICH FELL LAST NIGHT WILL RESULT IN UNUSUALLY LARGE RUNOFF AND POSSIBLE FLASH FLOODING OF CREEKS STREAMS AND OTHER LOW LYING AREAS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS`. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. PEDIGO
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 10, 9:09 PM CDT, 4 hours 9 minutes before
MOZALL-110715- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 905 PM CDT SUN APR 10 1994 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR SOUTHWEST AND SOUTH CENTRAL MISSOURI... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL MISSOURI EFFECTIVE THIS SUNDAY NIGHT AND EARLY MONDAY MORNING UNTIL 200 AM. SOME OF THE LARGER CITIES INCLUDED IN THIS WATCH ARE BRANSON...JOPLIN...ROLLA...SPRINGFIELD AND WEST PLAINS. THIS WATCH REPLACES THE PREVIOUS TORNADO WATCH FOR EXTREME SOUTHWEST MISSOURI AND THE SEVERE THUNDERSTORM WATCH WHICH WAS IN EFFECT FOR THE REST OF SOUTHWEST MISSOURI. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. SEVERE THUNDERSTORMS CAN PRODUCE DAMINGING WINDS AND LARGE HAIL...AS WELL AS VERY HEAVY RAINS AND DEADLY LIGHTNING. PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD BE ON TP LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA SOURCES FOR LATER STATEMENTS OR POSSIBLE WARNINGS. GKS
Special weather statement, Apr 10, 11:26 PM CDT, 1 hour 52 minutes before
MOZ024-025-032-033-039>042-045>051-055>059-068>070-110525- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MISSOURI 1124 PM CDT SUN APR 10 1994 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF SOUTH CENTRAL MISSOURI UNTIL 2 AM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE SOUTHERN PORTION OF CENTRAL MISSOURI TONIGHT... AT 1120 PM...WEATHER RADAR INDICATED A BROAD AREA OF SHOWERS AND THUNDERSTORMS THAT COVERED A LARGE PORTION OF CENTRAL MISSOURI. THE AREA WAS SLOWLY DRIFTING EASTWARD...WHILE INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 30 MPH. IN MID MISSOURI...THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER SINCE EARLIER IN THE EVENING...BUT THE PERSISTENT AND HEAVY RAINS WERE BEGINNING TO RESULT IN SOME LOCALIZED FLOODING. MOST FLOOD REPORTS WERE CONFINED TO LOW LYING COUNTY ROADS...LOW WATER BRIDGES AND CITY STREETS. HOWEVER...DRAINAGE DITCHES AND SMALL CREEKS WERE BEGINNING TO FILL AND ADDITIONAL HEAVY RAINS TONIGHT WILL CAUSE MORE WIDESPREAD FLOODING. PEOPLE IN CENTRAL MISSOURI SHOULD MONITOR FLOOD CONDITIONS...AND BE PREPARED TO MOVE TO HIGHER GROUND...SHOULD FLOODWATERS THREATEN. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. PERLOW
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 6:08 AM CDT | Flash Flood Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 6 hr |
| Apr 11, 6:08 AM CDT | Flash Flood Warning | LSX | Crawford, Washington | 6 hr |
| Apr 11, 6:08 AM CDT | Flash Flood Warning | LSX | Phelps | 6 hr |
| Apr 11, 7:13 AM CDT | Flash Flood Warning | LSX | Pike, Ralls | 6 hr |
| Apr 11, 7:13 AM CDT | Flash Flood Warning | LSX | Monroe | 6 hr |
| Apr 11, 7:29 AM CDT | Flash Flood Warning | LSX | Franklin | 5 hr |
| Apr 11, 6:00 PM CDT | Flash Flood Warning | LSX | Saint Charles | 4 hr |
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.