Alert archive / Missouri / Flash Flood Warnings in 2009
Flash Flood Warning 2, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Feb 11, 2009, 12:44 AM CST for Saint Louis County, City of Saint Louis, Missouri. It was in force for 5 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 11, 2009, 12:44 AM CST (06:44 UTC)
- Expired
- Feb 11, 2009, 5:45 AM CST
- In force
- 5 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
The radar
The St Louis radar (KLSX), 42 km from the middle of the area, began a volume at 06:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 11, 1:00 AM CST | HEAVY RAIN 1.3 | Ferguson, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 6.7 hours before the alert went out and 208 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
- 1257 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLSX 110644
FFWLSX
MOC189-510-111145-
/O.NEW.KLSX.FF.W.0002.090211T0644Z-090211T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1244 AM CST WED FEB 11 2009
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
NORTHERN ST. LOUIS CITY IN EAST CENTRAL MISSOURI
* UNTIL 545 AM CST
* AT 1236 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED FLASH FLOODING OVER THE WARNED AREA. RADAR ESTIMATES UP
TO ONE AND ONE HALF INCHES OF RAIN HAS FALLEN OVER NORTHEAST ST.
LOUIS COUNTY AND NORTHERN PORTIONS OF THE CITY. ADDITIONAL
MODERATE TO HEAVY RAINFALL IS EXPECTED THROUGH THE NIGHT AS WELL.
* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
AFFECTING SPANISH LAKE...RIVERVIEW...FERGUSON...DELLWOOD...BLACK
JACK AND BELLEFONTAINE NEIGHBORS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
LAT...LON 3877 9017 3871 9020 3869 9020 3866 9018
3865 9018 3868 9034 3881 9028 3884 9022
3882 9020 3882 9015 3878 9015
$$
CARNEY2 follow-up statements
000
WGUS73 KLSX 110848
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
248 AM CST WED FEB 11 2009
MOC189-510-111145-
/O.CON.KLSX.FF.W.0002.000000T0000Z-090211T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. LOUIS CITY MO-ST. LOUIS MO-
248 AM CST WED FEB 11 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 AM CST FOR
NORTHEASTERN ST. LOUIS AND NORTHERN ST. LOUIS CITY COUNTIES...
AT 240 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE FLASH FLOODING OVER THE WARNED AREA. ADDITIONALLY...
ST. LOUIS CITY POLICE REPORTED WATER SEVERAL INCHES DEEP FLOWING
OVER ROADS IN NORTHERN PORTIONS OF THE CITY. DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD. MOST FLASH FLOODING DEATHS OCCUR
IN AUTOMOBILES WHERE THE DRIVER ENTERS FLOWING WATER AND THE VEHICLE
IS SWEPT AWAY. PICKUP TRUCKS AND SPORT UTILITY VEHICLES CAN BE
SWEPT AWAY JUST AS EASILY AS SMALLER CARS. DO NOT BECOME A
STATISTIC
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RIVERVIEW...
FERGUSON...SPANISH LAKE...DELLWOOD...BLACK JACK AND BELLEFONTAINE
NEIGHBORS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
LAT...LON 3877 9017 3871 9020 3869 9020 3866 9018
3865 9018 3868 9034 3881 9028 3884 9022
3882 9020 3882 9015 3878 9015
$$
CARNEY000
WGUS73 KLSX 111148
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
548 AM CST WED FEB 11 2009
MOC189-510-111153-
/O.EXP.KLSX.FF.W.0002.000000T0000Z-090211T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ST. LOUIS CITY MO-ST. LOUIS MO-
548 AM CST WED FEB 11 2009
...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 AM CST FOR NORTHEASTERN
ST. LOUIS COUNTY AND NORTHERN ST. LOUIS CITY...
THE SHOWERS AND STORMS WHICH PRODUCED THE HEAVY RAINS EARLIER HAVE
MOVED OUT OF THE WARNED AREA. A FLASH FLOOD WATCH CONTINUES IN
EFFECT UNTIL NOON AS ADDITIONAL SHOWERS ARE EXPECTED LATER THIS
MORNING WHICH COULD PRODUCE MORE HEAVY RAINFALL.
MOTORISTS SHOULD USE CAUTION WHEN APPROACHING AREAS THAT EXPERIENCED
HIGH WATER LEVELS...AS THE FAST FLOWING WATER MAY HAVE DAMAGED
ROADWAYS AND BRIDGES.
LAT...LON 3877 9017 3871 9020 3869 9020 3866 9018
3865 9018 3868 9034 3881 9028 3884 9022
3882 9020 3882 9015 3878 9015
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 10, 10:47 PM CST | Flash Flood Warning | LSX | Cole | 3 hr |
| Feb 11, 12:17 AM CST | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 6 hr |
| Feb 11, 2:29 AM CST | Severe Thunderstorm Warning | LSX | Madison | 27 min |
| Feb 11, 2:49 AM CST | River Flood Warning | LSX | Jefferson | 32 hr |
| Feb 11, 10:27 AM CST | River Flood Warning | LSX | Franklin | 72 hr |
| Feb 11, 10:54 AM CST | River Flood Warning | LSX | Reynolds | 34 hr |
Nearby
Flash Flood Warnings in Missouri, 2009Every flash flood warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.