Alert archive / Missouri / Flash Flood Warnings in 2011
Flash Flood Warning 29, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at May 25, 2011, 3:38 PM CDT for Ralls County, Missouri. It was in force for 6 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
- May 25, 2011, 3:38 PM CDT (20:38 UTC)
- Expired
- May 25, 2011, 9:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Ralls County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 20:39 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
Lincoln, IL (KILX), launched 12:00Z, 8.6 hours before the alert went out and 248 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
- 1832 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 10.1
The text
As transmitted, in the capitals the NWS used until 2016.
945
WGUS53 KLSX 252038
FFWLSX
MOC173-260230-
/O.NEW.KLSX.FF.W.0029.110525T2038Z-110526T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
338 PM CDT WED MAY 25 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
RALLS COUNTY IN NORTHEAST MISSOURI...
* UNTIL 930 PM CDT
* AT 335 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. DOPPLER RADAR INDICATED THAT OVER 2 INCHES OF RAIN
HAD FALLEN OVER WESTERN PORTIONS OF RALLS COUNTY AND THAT
ADDITIONAL HEAVY RAINFALL WILL CONTINUE TO AFFECT THE AREA.
THE WESTERN PORTION OF THE SALT RIVER...BURBRIDGE CREEK...CEDAR
CREEK...AND LICK CREEK WERE ESPECIALLY HARD HIT BY THIS HEAVY RAIN.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CENTER...NEW LONDON...PERRY...RENSSELAER AND SPAULDING.
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.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 3968 9131 3962 9123 3960 9118 3960 9121
3945 9146 3932 9144 3933 9172 3969 9171
$$
CARNEY1 follow-up statement
428
WGUS73 KLSX 260234
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
934 PM CDT WED MAY 25 2011
MOC173-260249-
/O.EXP.KLSX.FF.W.0029.000000T0000Z-110526T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RALLS MO-
934 PM CDT WED MAY 25 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR RALLS COUNTY HAS
BEEN ALLOWED TO EXPIRE...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 3968 9131 3962 9123 3960 9118 3960 9121
3945 9146 3932 9144 3933 9172 3969 9171
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 1:32 AM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau | 43 min |
| May 25, 1:35 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Lincoln, Montgomery, Pike, Ralls | 40 min |
| May 25, 2:00 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Marion, Pike, Ralls | 45 min |
| May 25, 2:16 AM CDT | Areal Flood Advisory | LSX | Boone, Cole, Moniteau | 6 hr |
| May 25, 3:09 AM CDT | Areal Flood Advisory | LSX | Audrain, Knox, Lewis, Marion, Monroe, Ralls and 1 more | 5 hr |
| May 25, 3:55 AM CDT | Flash Flood Warning | LSX | Lewis, Marion, Shelby | 6 hr |
| May 25, 4:15 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Lincoln, Saint Charles, Saint Louis, Warren | 35 min |
| May 25, 4:39 AM CDT | Tornado Warning | LSX | Lincoln | 22 min |
| May 25, 5:08 AM CDT | River Flood Warning | LSX | Lewis | 3 days |
| May 25, 7:47 AM CDT | Areal Flood Advisory | LSX | Audrain, Boone, Cole, Knox, Lewis, Marion and 5 more | 3 hr |
| May 25, 7:56 AM CDT | River Flood Warning | LSX | Marion | 12 hr |
| May 25, 9:06 AM CDT | River Flood Warning | LSX | Marion | 11 hr |
| May 25, 11:03 AM CDT | River Flood Warning | LSX | Callaway, Cole | 5 days |
| May 25, 11:03 AM CDT | River Flood Warning | LSX | Franklin, Warren | 6 days |
| May 25, 11:03 AM CDT | River Flood Warning | LSX | Saint Charles, Saint Louis | 20 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Lewis | 13 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Marion | 13 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Marion | 13 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Marion | 40 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Ralls | 15 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Pike | 40 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Pike | 46 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Lincoln | 43 days |
| May 25, 12:15 PM CDT | River Flood Warning | LSX | Saint Louis, City of Saint Louis | 46 days |
| May 25, 1:00 PM CDT | Tornado Warning | LSX | Cole, Moniteau | 60 min |
| May 25, 1:36 PM CDT | Flash Flood Warning | LSX | Moniteau | 5 hr |
| May 25, 1:36 PM CDT | Tornado Warning | LSX | Cole | 39 min |
| May 25, 1:48 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Montgomery, Pike | 42 min |
| May 25, 1:54 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike, Warren | 51 min |
| May 25, 1:55 PM CDT | Tornado Warning | LSX | Boone, Callaway, Cole, Moniteau | 50 min |
| May 25, 2:02 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone, Marion, Monroe, Ralls, Shelby | 43 min |
| May 25, 2:05 PM CDT | Tornado Warning | LSX | Audrain, Callaway, Montgomery, Pike | 40 min |
| May 25, 2:07 PM CDT | Tornado Warning | LSX | Lincoln, Montgomery, Pike, Warren | 53 min |
| May 25, 2:11 PM CDT | Tornado Warning | LSX | Audrain, Marion, Monroe, Ralls, Shelby | 49 min |
| May 25, 2:14 PM CDT | Flash Flood Warning | LSX | Cole | 5 hr |
| May 25, 2:15 PM CDT | Tornado Warning | LSX | Callaway, Cole, Osage | 45 min |
| May 25, 2:22 PM CDT | Tornado Warning | LSX | Crawford, Franklin, Gasconade | 53 min |
| May 25, 2:29 PM CDT | Tornado Warning | LSX | Crawford | 61 min |
| May 25, 2:36 PM CDT | Flash Flood Warning | LSX | Audrain, Boone | 6 hr |
| May 25, 2:42 PM CDT | Tornado Warning | LSX | Audrain, Montgomery, Pike | 48 min |
| May 25, 2:43 PM CDT | Tornado Warning | LSX | Jefferson, Saint Francois, Washington | 18 min |
| May 25, 2:44 PM CDT | Tornado Warning | LSX | Audrain, Callaway, Montgomery, Osage | 46 min |
| May 25, 2:49 PM CDT | Tornado Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 32 min |
| May 25, 2:51 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade, Osage | 39 min |
| May 25, 2:54 PM CDT | Tornado Warning | LSX | Marion, Monroe, Pike, Ralls | 51 min |
| May 25, 2:55 PM CDT | Tornado Warning | LSX | Lincoln, Pike | 50 min |
| May 25, 3:05 PM CDT | Tornado Warning | LSX | Franklin, Gasconade, Lincoln, Montgomery, Warren | 40 min |
| May 25, 3:05 PM CDT | Tornado Warning | LSX | Iron, Reynolds | 40 min |
| May 25, 3:08 PM CDT | Flash Flood Warning | LSX | Monroe | 6 hr |
| May 25, 3:09 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 36 min |
| May 25, 3:16 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 44 min |
| May 25, 3:19 PM CDT | Tornado Warning | LSX | Crawford, Franklin, Jefferson, Washington | 41 min |
| May 25, 3:23 PM CDT | Flash Flood Warning | LSX | Lincoln, Montgomery, Pike | 6 hr |
| May 25, 3:29 PM CDT | Tornado Warning | LSX | Lincoln | 46 min |
| May 25, 3:30 PM CDT | Tornado Warning | LSX | Jefferson | 33 min |
| May 25, 3:32 PM CDT | Tornado Warning | LSX | Iron, Reynolds, Washington | 43 min |
| May 25, 3:34 PM CDT | Tornado Warning | LSX | Pike, Ralls | 41 min |
| May 25, 3:37 PM CDT | Tornado Warning | LSX | Lewis, Marion | 25 min |
| May 25, 3:41 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 38 min |
| May 25, 3:41 PM CDT | Tornado Warning | LSX | Iron, Madison, Reynolds, Saint Francois, Washington | 37 min |
| May 25, 3:42 PM CDT | Flash Flood Warning | LSX | Lewis, Marion | 6 hr |
| May 25, 3:43 PM CDT | Tornado Warning | LSX | Pike | 47 min |
| May 25, 3:48 PM CDT | Areal Flood Advisory | LSX | Callaway | 6 hr |
| May 25, 3:59 PM CDT | Tornado Warning | LSX | Iron, Madison | 46 min |
| May 25, 4:00 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 45 min |
| May 25, 4:05 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 40 min |
| May 25, 4:11 PM CDT | Tornado Warning | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 49 min |
| May 25, 4:14 PM CDT | Tornado Warning | LSX | Iron, Jefferson, Saint Francois, Washington | 46 min |
| May 25, 4:23 PM CDT | Tornado Warning | LSX | Jefferson, Sainte Genevieve | 52 min |
| May 25, 4:30 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 45 min |
| May 25, 4:34 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 26 min |
| May 25, 4:40 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis | 21 min |
| May 25, 4:45 PM CDT | Tornado Warning | LSX | Madison | 45 min |
| May 25, 4:51 PM CDT | Tornado Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois, Washington | 39 min |
| May 25, 5:00 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis, City of Saint Louis | 25 min |
| May 25, 5:03 PM CDT | Flash Flood Warning | LSX | Saint Louis, City of Saint Louis | 4 hr |
| May 25, 5:12 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 48 min |
| May 25, 5:17 PM CDT | Tornado Warning | LSX | Madison, Sainte Genevieve, Saint Francois | 43 min |
| May 25, 5:23 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 52 min |
Nearby
Flash Flood Warnings in Missouri, 2011Every flash flood warning in 2011
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.