Alert archive / Missouri / Flash Flood Warnings in 2015
Flash Flood Warning 25, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 21, 2015, 4:45 AM CDT for 4 counties in Missouri. It was in force for 6 hr. 4 reports 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
- Jun 21, 2015, 4:45 AM CDT (09:45 UTC)
- Expired
- Jun 21, 2015, 10:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Audrain County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO
The radar
The St Louis radar (KLSX), 90 km from the middle of the area, began a volume at 09:45 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 |
|---|---|---|---|
| Jun 21, 7:30 AM CDT | FLASH FLOOD | Laddonia, MO | SEVERAL SECONDARY ROADS ARE FLOODED. ONE ROAD HAD A CULVERT WASHED OUT. |
| Jun 21, 7:30 AM CDT | FLASH FLOOD | Middletown, MO | A NUMBER OF SECONDARY ROADS ARE FLOODED. |
| Jun 21, 7:30 AM CDT | FLASH FLOOD | Middletown, MO | A NUMBER OF SECONDARY ROADS ARE FLOODED. ROUTE CC EAST OF WELLSVILLE AND ROUTE E SOUTHEAST OF MIDDLETOWN ARE CLOSED. |
| Jun 21, 7:45 AM CDT | HEAVY RAIN 4.25 | 4 Sw Middletown, MO | 24 HOUR RAINFALL TOTAL. THEIR GRAVEL DRIVE HAS SOME WASHOUTS ON IT DUE TO THE HEAVY RAIN. |
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, 9.8 hours before the alert went out and 266 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
- 143 J/kg
- Mixed-layer CIN
- -493 J/kg
- Mixed-layer LCL
- 1524 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 269 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
521
WGUS53 KLSX 210945
FFWLSX
MOC007-139-163-173-211530-
/O.NEW.KLSX.FF.W.0025.150621T0945Z-150621T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
445 AM CDT SUN JUN 21 2015
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
SOUTHERN RALLS COUNTY IN NORTHEAST MISSOURI...
WESTERN PIKE COUNTY IN NORTHEAST MISSOURI...
* UNTIL 1030 AM CDT
* AT 442 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. BETWEEN ONE AND TWO INCHES OF RAIN HAS FALLEN IN
THE PAST 3 HOURS ON SATURATED GROUND. AN ADDITIONAL INCH OR TWO
IS POSSIBLE IN THE NEXT COUPLE OF HOURS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
VANDALIA...WELLSVILLE...BELLFLOWER...BUELL...CENTER...CURRYVILLE...
FARBER...FRANKFORD...LADDONIA...MARTINSBURG...NEW HARTFORD...PERRY
AND SPENCERBURG.
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.
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.
&&
LAT...LON 3952 9128 3914 9126 3895 9126 3904 9164
3906 9163 3906 9171 3953 9171
$$
BYRD1 follow-up statement
573
WGUS73 KLSX 211248
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
748 AM CDT SUN JUN 21 2015
MOC007-139-163-173-211530-
/O.CON.KLSX.FF.W.0025.000000T0000Z-150621T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY MO-PIKE MO-RALLS MO-AUDRAIN MO-
748 AM CDT SUN JUN 21 2015
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN AUDRAIN COUNTY
IN CENTRAL MISSOURI...AND MONTGOMERY COUNTY IN EAST CENTRAL
MISSOURI...AND SOUTHERN RALLS AND WESTERN PIKE COUNTIES IN NORTHEAST
MISSOURI UNTIL 1030 AM CDT...
AT 740 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORMS WERE OVER NORTHERN MONTGOMERY COUNTY. THE STORMS WILL
SLOWLY EXIT THE AREA BY 9 AM. OTHERWISE...A NUMBER OF SECONDARY
ROADS WERE FLOODED...INCLUDING ROUTE CC EAST OF WELLSVILLE AND ROUTE
E WEST OF OLNEY. AS OF 730 AM...RADAR WAS INDICATING THAT BETWEEN 1
AND 4 INCHES OF RAIN HAS FALLEN SO FAR. THE HIGHEST AMOUNTS WERE
OVER SOUTHERN PIKE...EASTERN AUDRAIN AND NORTHERN MONTGOMERY COUNTIES
IN MISSOURI.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
VANDALIA...WELLSVILLE...BELLFLOWER...BUELL...CENTER...CURRYVILLE...
FARBER...FRANKFORD...LADDONIA...MARTINSBURG...NEW HARTFORD...PERRY
AND SPENCERBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3952 9128 3914 9126 3895 9126 3904 9164
3906 9163 3906 9171 3953 9171
$$
BYRDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:23 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis | 67 min |
| Jun 20, 8:55 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Shelby | 65 min |
| Jun 20, 10:08 PM CDT | Flash Flood Warning | LSX | Knox, Lewis | 6 hr |
| Jun 20, 11:47 PM CDT | River Flood Warning | LSX | Lewis | 10 days |
| Jun 20, 11:47 PM CDT | River Flood Warning | LSX | Lewis | 60 hr |
| Jun 21, 12:52 AM CDT | River Flood Warning | LSX | Marion | 11 days |
| Jun 21, 1:40 AM CDT | Areal Flood Advisory | LSX | Marion, Pike, Ralls | 6 hr |
| Jun 21, 1:48 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 42 min |
| Jun 21, 2:31 AM CDT | River Flood Warning | LSX | Marion | 72 hr |
| Jun 21, 3:46 AM CDT | Heat Advisory | LSX | Jefferson, Saint Charles, Saint Louis, City of Saint Louis | 39 hr |
| Jun 21, 3:54 AM CDT | Flash Flood Warning | LSX | Lincoln, Pike | 6 hr |
| Jun 21, 4:01 AM CDT | Flash Flood Warning | LSX | Knox, Lewis | 6 hr |
| Jun 21, 5:39 AM CDT | River Flood Warning | LSX | Lincoln | 70 hr |
| Jun 21, 9:48 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Montgomery | 42 min |
| Jun 21, 9:57 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Saint Louis | 31 min |
| Jun 21, 10:08 AM CDT | Flash Flood Warning | LSX | Audrain, Lincoln, Montgomery, Pike, Ralls | 6 hr |
| Jun 21, 10:56 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Montgomery, Pike | 49 min |
| Jun 21, 3:40 PM CDT | Areal Flood Warning | LSX | Audrain, Lincoln, Montgomery, Pike, Ralls | 12 hr |
Nearby
Flash Flood Warnings in Missouri, 2015Every flash flood warning in 2015
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.