Alert archive / Missouri / Flash Flood Warnings in 2012
Flash Flood Warning 25, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Sep 6, 2012, 3:00 PM CDT for Crawford County, Missouri. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2012, 3:00 PM CDT (20:00 UTC)
- Expired
- Sep 6, 2012, 8:15 PM CDT
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Crawford County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 20:01 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 (KSGF), launched 12:00Z, 8.0 hours before the alert went out and 243 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
- 841 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1845 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
881
WGUS53 KLSX 062000
FFWLSX
MOC055-070200-
/O.NEW.KLSX.FF.W.0025.120906T2000Z-120907T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
300 PM CDT THU SEP 6 2012
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
* UNTIL 900 PM CDT
* AT 258 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. DOPPLER RADAR ESTIMATES AND A RAIN GAGE AT COOK
STATION INDICATES THAT 2 TO 3 INCHES OF RAIN HAS FALLEN SINCE
130 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
COOK STATION...CUBA...STEELVILLE...CHERRYVILLE AND LEASBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 3770 9131 3770 9132 3778 9131 3778 9153
3779 9153 3813 9152 3813 9110 3774 9110
3774 9115 3770 9115 3769 9116
$$
GLASS1 follow-up statement
126
WGUS73 KLSX 070115
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
815 PM CDT THU SEP 6 2012
MOC055-070126-
/O.CAN.KLSX.FF.W.0025.000000T0000Z-120907T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD MO-
815 PM CDT THU SEP 6 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CRAWFORD COUNTY IS
CANCELLED...
NO FLOODING HAD BEEN REPORTED TO THE CRAWFORD COUNTY SHERIFFS OFFICE
AS OF 8 PM THIS EVENING. THE EXCESS RUNOFF FROM HEAVY RAIN OF THIS
AFTERNOON HAS ENDED...AND STREAMS AND CREEKS IN THE WARNED AREA HAVE
RECEDED OR WERE BEGINNING TO RECEDE WHICH HAS ENDED THE FLOOD
THREAT.
MOTORISTS SHOULD STILL REMAIN ALERT WHEN DRIVING INTO LOW WATER
CROSSINGS...OR OTHER AREAS THAT ARE PRONE TO FLOODING DURING TIMES
OF WET WEATHER.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
LAT...LON 3770 9131 3770 9132 3778 9131 3778 9153
3779 9153 3813 9152 3813 9110 3774 9110
3774 9115 3770 9115 3769 9116
$$
TRUETTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 1:44 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 46 min |
| Sep 6, 2:28 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole, Osage | 47 min |
| Sep 6, 2:31 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 44 min |
| Sep 6, 3:13 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois, Washington | 27 min |
| Sep 6, 3:15 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade | 45 min |
| Sep 6, 3:31 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Washington | 44 min |
| Sep 6, 3:39 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 54 min |
| Sep 6, 3:58 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 47 min |
| Sep 6, 4:02 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, Warren, Washington | 43 min |
| Sep 6, 4:20 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 40 min |
| Sep 6, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Louis | 37 min |
| Sep 6, 5:18 PM CDT | Areal Flood Advisory | LSX | Madison, Saint Francois | 3 hr |
Nearby
Flash Flood Warnings in Missouri, 2012Every flash flood warning in 2012
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.