Alert archive / Missouri / Flash Flood Warnings in 1998
Flash Flood Warning 43, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Sep 17, 1998, 11:44 AM CDT for Audrain County, Missouri. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 17, 1998, 11:44 AM CDT (16:44 UTC)
- Expired
- Sep 17, 1998, 2:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Audrain County, MO
The radar
The St Louis radar (KLSX), 116 km from the middle of the area, began a volume at 16:44 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
Davenport, (KDVN), launched 12:00Z, 4.7 hours before the alert went out and 290 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
- 1239 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 13 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 171648 FFWSTL MOC007-171945- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1144 AM CDT THU SEP 17 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * FLASH FLOOD WARNING FOR... AUDRAIN COUNTY IN CENTRAL MISSOURI * UNTIL 245 PM CDT * A NEARLY STATIONARY AREA OF SHOWERS AND THUNDERSTORMS HAS PRODUCED HEAVY RAIN IN THE MEXICO AREA SINCE MID MORNING. RADAR INDICATES SOME LOCATIONS HAVE RECEIVED AS MUCH AS 4 TO 5 INCHES OF RAIN. THE HEAVY RAIN SHOULD SLOWLY DECREASE IN INTENSITY BY 1 PM WITH AN ADDITIONAL ONE TO TWO INCHES OF RAIN BY THAT TIME. * AUDRAIN COUNTY SHERIFF'S DEPARTMENT REPORTED A FOOT OF WATER OVER ROUTE J EAST OF MEXICO. A FLASH FLOOD MEANS THAT FLOODING IS IMMINENT OR OCCURRING. RESIDENTS LIVING ALONG SMALL STREAMS AND FLOOD PRONE AREAS SHOULD TAKE IMMEDIATE ACTION WHEN FLOODING THREATENS. BE ESPECIALLY CAUTIOUS IF CAMPING NEAR A SMALL STREAM. RAIN UPSTREAM MAY CAUSE FLASH FLOODING AT YOUR LOCATION WITH LITTLE OR NO WARNING. WDB &
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, Sep 17, 11:10 AM CDT, 34 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-171700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1110 AM CDT THU SEP 17 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE ACROSS THE AREA THROUGH THE AFTERNOON...BUT NO SEVERE THUNDERSTORMS ARE EXPECTED. SPOTTER ACTIVATION WILL NOT BE NEEDED AT THIS TIME. WDB
Special weather statement, Sep 17, 11:10 AM CDT, 34 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-171700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 1110 AM CDT THU SEP 17 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE ACROSS THE AREA THROUGH THE AFTERNOON...BUT NO SEVERE THUNDERSTORMS ARE EXPECTED. SPOTTER ACTIVATION WILL NOT BE NEEDED AT THIS TIME. WDB
Nearby
Flash Flood Warnings in Missouri, 1998Every flash flood warning in 1998
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.