Alert archive / Missouri / Flash Flood Warnings in 2004
Flash Flood Warning 27, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Aug 26, 2004, 1:23 AM CDT for Audrain County, Boone County, Missouri. It was in force for 4 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
- Aug 26, 2004, 1:23 AM CDT (06:23 UTC)
- Expired
- Aug 26, 2004, 5:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
Counties Audrain County, MO, Boone County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 06:27 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 00:00Z, 6.4 hours before the alert went out and 291 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
- 1111 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 904 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLSX 260626
FFWLSX
MOC007-019-261030-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
123 AM CDT THU AUG 26 2004
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
AUDRAIN COUNTY IN CENTRAL MISSOURI
NORTHEASTERN BOONE COUNTY IN CENTRAL MISSOURI
* UNTIL 530 AM CDT
* AT 123 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN AND AROUND CENTRALIA
AND MEXICO. RADAR ESTIMATES NEAR THE BOONE AND AUDRAIN COUNTY LINE
INDICATE OVER 3 INCHES OF RAIN HAS FALLEN SINCE MIDNIGHT.
* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
EFFECTING EXTREME NORTHERN BOONE COUNTY AROUND STURGEON AND
CENTRALIA AND MUCH OF WESTERN AUDRAIN COUNTY. HIGHWAY 22 IS
LIKELY WATER COVERED IN SPOTS.
IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER
GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLASH FLOODING IS OBSERVED. MOVE
TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT
TO FLOODING WHEN WATER BEGINS RISING.
LAT...LON 3932 9149 3915 9147 3914 9162 3907 9167
3907 9202 3922 9246 3935 9230
$$
FG3 follow-up statements
000 WGUS73 KLSX 260728 FFSLSX MOC007-019-261030- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 220 AM CDT THU AUG 26 2004 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN BOONE AND AUDRAIN COUNTIES UNTIL 530 AM CDT... AT 220 AM CDT...RADAR INDICATED THAT THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAD WEAKENED AND EXTENDED FROM LADDONIA TO BENTON CITY. THE STORMS WERE MOVING EAST AROUND 35 MPH. RAINFALL HAS ENDED OVER NORTHERN BOONE COUNTY AND WESTERN AUDRAIN COUNTY...BUT LAW ENFORCEMENT REPORTED SOME MINOR FLOODING OF ROADS IN CENTRALIA AND MEXICO WITH WATER UP TO 6 TO 8 INCHES DEEP. CURRENT TRENDS ARE THAT THE RAINFALL SHOULD END OVER EASTERN AUDRAIN COUNTY BY 300 AM AND THEREFORE WATER SHOULD BEGIN TO RECEDE OVER BOTH COUNTIES DURING THE NEXT SEVERAL HOURS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. AVOID BRIDGES...DIPS... OR OTHER LOW LYING AREAS...AND NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. $$ FG
000 WGUS73 KLSX 260837 FFSLSX MOC007-019-261030- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 335 AM CDT THU AUG 26 2004 ...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN BOONE AND AUDRAIN COUNTIES UNTIL 530 AM CDT... AT 325 AM CDT...LAW ENFORCEMENT REPORTED THAT WHILE HIGH WATER WAS IN THE PROCESS OF RECEDING...SOME ROADWAYS STILL HAD MINOR FLOODING WITH WATER UP TO 6 INCHES DEEP. FLOODING WAS NO LONGER OCCURRING IN THE TOWN OF CENTRALIA...BUT JUST OUTSIDE OF TOWN...THERE WAS STILL SOME LINGERING HIGH WATER A FEW INCHES DEEP. IN MEXICO...THERE WERE STILL SOME WATER COVERED ROADWAYS. THE RAIN HAS ENDED ACROSS CENTRAL MISSOURI...THEREFORE THE RECEDING TREND SHOULD CONTINUE INTO THE EARLY MORNING HOURS. UNTIL THE WATER HAS COMPLETELY RECEDED BE CAUTIOUS. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. AVOID BRIDGES...DIPS... OR OTHER LOW LYING AREAS...AND NEVER 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. $$ FG
000 WGUS73 KLSX 261034 FFSLSX MOC007-019-261100- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 531 AM CDT THU AUG 26 2004 ...FLASH FLOOD WARNING FOR NORTHEASTERN BOONE AND AUDRAIN COUNTIES HAS EXPIRED... REPORTS FROM LAW ENFORCEMENT OFFICIALS INDICATE HIGH WATER HAS RECEDED AND FLOODING WAS NO LONGER OCCURRING. THUS THE FLASH FLOODING WARNING HAS BEEN ALLOWED TO EXPIRE. $$
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 7:04 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 41 min |
| Aug 25, 8:05 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois | 40 min |
| Aug 26, 12:34 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone | 41 min |
| Aug 26, 1:23 AM CDT | Severe Thunderstorm Warning | LSX | Audrain | 37 min |
| Aug 26, 3:37 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 53 min |
| Aug 26, 4:54 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Warren | 36 min |
| Aug 26, 5:24 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 51 min |
Nearby
Flash Flood Warnings in Missouri, 2004Every flash flood warning in 2004
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.