Alert archive / Missouri / Flash Flood Warnings in 2009
Flash Flood Warning 68, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 18, 2009, 9:04 PM CDT for Iron County, Madison County, Reynolds County, Missouri. It was in force for 6 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
- Aug 18, 2009, 9:04 PM CDT (02:04 UTC)
- Expired
- Aug 19, 2009, 3:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Iron County, MO, Madison County, MO, Reynolds County, MO
The radar
The St Louis radar (KLSX), 142 km from the middle of the area, began a volume at 02:06 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 |
|---|---|---|---|
| Aug 18, 11:26 PM CDT | FLASH FLOOD | Lesterville, MO | 2 FEET OF FLOWING WATER OVER HIGHWAY U IN LESTERVILLE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.1 hours before the alert went out and 285 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
- 226 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1260 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLSX 190204
FFWLSX
MOC093-123-179-190800-
/O.NEW.KLSX.FF.W.0068.090819T0204Z-090819T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
904 PM CDT TUE AUG 18 2009
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL REYNOLDS COUNTY IN SOUTHEAST MISSOURI...
IRON COUNTY IN SOUTHEAST MISSOURI...
WESTERN MADISON COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 300 AM CDT
* AT 900 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR ESTIMATES THAT UP TO 5 INCHES OF RAINFALL HAS
OCCURRED THIS EVENING...AND ADDITIONAL RAINFALL AMOUNTS OF 1 TO
LOCALLY 3 INCHES ARE POSSIBLE.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. THE BIG CREEK...BLACK RIVER...MARBLE CREEK...AND ST.
FRANCIS RIVER WILL SEE WATER LEVELS RISE VERY QUICKLY. EVEN IF IT
IS NOT RAINING IN YOUR LOCATION...UPSTREAM RAINFALL CAN CAUSE
RIVER LEVELS TO RISE...AND FLASH FLOODING TO OCCUR DOWNSTREAM.
STAY ALERT AND IF WATER BEGINS TO RISE...HEAD FOR HIGHER GROUND
IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.
&&
LAT...LON 3747 9090 3762 9060 3763 9040 3731 9040
3731 9056 3728 9056 3727 9091
$$
CVKING1 follow-up statement
000
WGUS73 KLSX 190441
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1141 PM CDT TUE AUG 18 2009
MOC093-123-179-190800-
/O.CON.KLSX.FF.W.0068.000000T0000Z-090819T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
REYNOLDS MO-MADISON MO-IRON MO-
1141 PM CDT TUE AUG 18 2009
...FLASH FLOOD WARNING FOR REMAINS IN EFFECT FOR IRON...WESTERN
MADISON AND EAST CENTRAL REYNOLDS COUNTIES UNTIL 300 AM CDT...
AT 1137 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS CONTINUE TO DEVELOP ACROSS SOUTHEAST MISSOURI. THE
THUNDERSTORM THAT BROUGHT UP TO 6 INCHES OF RAINFALL TO THE WARNED
AREA HAS DISSIPATED...BUT ADDITIONAL RAINFALL IS POSSIBLE AS MORE
THUNDERSTORMS AFFECT THE AREA.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. THE BIG CREEK...BLACK RIVER...MARBLE CREEK...AND ST. FRANCIS
RIVER WILL SEE WATER LEVELS RISE VERY QUICKLY OVERNIGHT. EVEN IF IT
IS NOT RAINING IN YOUR LOCATION...UPSTREAM RAINFALL CAN CAUSE RIVER
LEVELS TO RISE...AND FLASH FLOODING TO OCCUR DOWNSTREAM. STAY ALERT
AND IF WATER BEGINS TO RISE...HEAD FOR HIGHER GROUND IMMEDIATELY.
AT 1130 PM...LOCAL LAW ENFORCEMENT REPORTED 2 FEET OF FLOWING WATER
ACROSS HIGHWAY U NEAR LESTERVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS.
&&
LAT...LON 3747 9090 3762 9060 3763 9040 3731 9040
3731 9056 3728 9056 3727 9091
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:46 PM CDT | Areal Flood Advisory | LSX | Iron, Madison, Reynolds | 3 hr |
| Aug 19, 3:20 PM CDT | Flash Flood Watch | LSX | Audrain, Boone, Callaway, Cole, Crawford, Franklin and 18 more | 13 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.