Alert archive / Missouri / Flash Flood Warnings in 1993
Flash Flood Warning 41, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 13, 1993, 1:13 PM CDT for Marion County, Shelby County, Missouri. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 13, 1993, 1:13 PM CDT (18:13 UTC)
- Expired
- Jul 13, 1993, 5:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Marion County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 159 km from the middle of the area, began a volume at 18:12 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 12:00Z, 6.2 hours before the alert went out and 365 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
- 854 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 131814 FFWSTL MOC127-205-132200- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 113 PM CDT TUE JUL 13 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST MISSOURI ...MARION COUNTY...SHELBY COUNTY AT 100 PM...RADAR INDICATED AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN MOVING THROUGH NORTHEAST MISSOURI. THE HEAVIEST RAIN WAS OVER EASTERN SHELBY COUNTY...30 MILES NORTHWEST OF HANNIBAL. MOVEMENT WAS EAST AT 25 TO 30 MILES AN HOUR. THESE STORMS WILL AFFECT SHELBYVILLE... PALMYRA AND HANNIBAL THIS AFTERNOON. THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAIN AND FLASH FLOODING AS THEY PASS THROUGH THE AREA. AS MUCH AS TWO INCHES IN A HALF HOUR HAVE BEEN REPORTED AS THESE STORMS MOVED THROUGH THE KIRKSVILLE REGION. THIS WILL CAUSE FLASH FLOODING AND MAY CAUSE ROADS TO FLOOD OVER. SEVERAL INCHES OF RAIN ARE POSSIBLE DURING THE AFTERNOON SO MOVE TO HIGH GROUND AND STAY AWAY FROM SWOLLEN CREEKS. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS 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. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. 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. SHEA
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, Jul 13, 8:10 AM CDT, 5 hours 3 minutes before
MOZALL-141200- MISSOURI SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 810 AM CDT TUE JUL 13 1993 A WEATHER SYSTEM IN THE PLAINS WILL PRODUCE SCATTERED THUNDERSTORMS IN MISSOURI THIS AFTERNOON AND TONIGHT. THERE WILL BE A SLIGHT CHANCE OF SEVERE THUNDERSTORMS OVER MUCH OF NORTHERN AND WESTERN MISSOURI. THAT AREA IS GENERALLY TO THE NORTH OF A LINE FROM JOPLIN TO ST LOUIS. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION THIS AFTERNOON. TUCKER
Special weather statement, Jul 13, 8:14 AM CDT, 4 hours 59 minutes before
MOZALL-141200- MISSOURI SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 810 AM CDT TUE JUL 13 1993 A WEATHER SYSTEM IN THE PLAINS WILL PRODUCE SCATTERED THUNDERSTORMS IN MISSOURI THIS AFTERNOON AND TONIGHT. THERE WILL BE A SLIGHT CHANCE OF SEVERE THUNDERSTORMS OVER MUCH OF NORTHERN AND WESTERN MISSOURI. THAT AREA IS GENERALLY TO THE NORTH OF A LINE FROM JOPLIN TO ST LOUIS. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVIJSED OF THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION THIS AFTERNOON. TUCKER
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 11:45 AM CDT | Flash Flood Warning | LSX | Adair | 3 hr |
| Jul 13, 3:39 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 51 min |
| Jul 13, 6:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 45 min |
| Jul 13, 6:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 23 min |
| Jul 13, 6:42 PM CDT | Severe Thunderstorm Warning | LSX | City of Saint Louis | 48 min |
Nearby
Flash Flood Warnings in Missouri, 1993Every flash flood warning in 1993
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.