Alert archive / Missouri / Flash Flood Warnings in 2011
Flash Flood Warning 20, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Apr 26, 2011, 10:54 PM CDT for Iron County, Madison County, Reynolds 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
- Apr 26, 2011, 10:54 PM CDT (03:54 UTC)
- Expired
- Apr 27, 2011, 5:00 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), 150 km from the middle of the area, began a volume at 03:55 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
Springfield, MO (KSGF), launched 00:00Z, 3.9 hours before the alert went out and 262 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
- 1142 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
166
WGUS53 KLSX 270354
FFWLSX
MOC093-123-179-271000-
/O.NEW.KLSX.FF.W.0020.110427T0354Z-110427T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1054 PM CDT TUE APR 26 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
IRON COUNTY IN SOUTHEAST MISSOURI...
MADISON COUNTY IN SOUTHEAST MISSOURI...
REYNOLDS COUNTY IN SOUTHEAST MISSOURI...
* UNTIL 500 AM CDT WEDNESDAY
* AT 1051 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
AN AREA OF THUNDERSTORMS WITH HEAVY RAINFALL ACROSS THE WARNED
AREA.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR...AND THIS WILL BE ABOVE AND BEYOND EXISTING FLOODING FROM
PREVIOUS HEAVY RAINS OVER THE LAST FEW DAYS. SOME LOCATIONS THAT
WILL EXPERIENCE FLOODING INCLUDE...FREDERICKTOWN...IRONTON...
ANNAPOLIS...ARCADIA...BELLEVIEW...BIXBY...BUCKHORN...BUNKER...
ELLINGTON...GARWOOD...GLOVER...JUNCTION CITY...MARQUAND...
OATES...PILOT KNOB...REYNOLDS...ROSELLE...SACO AND VIBURNUM.
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.
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.
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.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.
&&
LAT...LON 3706 9097 3710 9097 3710 9102 3717 9104
3720 9113 3726 9116 3750 9122 3750 9130
3754 9132 3759 9132 3759 9117 3774 9115
3774 9065 3764 9065 3764 9015 3732 9015
3731 9054 3727 9056 3727 9074 3705 9079
$$
TES1 follow-up statement
595
WGUS73 KLSX 270956
FFSLSX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
456 AM CDT WED APR 27 2011
MOC093-123-179-271011-
/O.EXP.KLSX.FF.W.0020.000000T0000Z-110427T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
REYNOLDS MO-MADISON MO-IRON MO-
456 AM CDT WED APR 27 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR IRON...MADISON AND
REYNOLDS COUNTIES WILL BE ALLOWED TO EXPIRE AT 500 AM CDT...
EXCESS RUNOFF FROM HEAVY RAIN WILL CONTINUE TO LEAD TO FLOODING OF
LOW LYING AREAS...BUT LIFE THREATENING FLASH FLOODING IS NOT
EXPECTED TO OCCUR. AN AREAL FLOOD WARNING REMAINS IN EFFECT THROUGH
11 AM.
LAT...LON 3706 9097 3710 9097 3710 9102 3717 9104
3720 9113 3726 9116 3750 9122 3750 9130
3754 9132 3759 9132 3759 9117 3774 9115
3774 9065 3764 9065 3764 9015 3732 9015
3731 9054 3727 9056 3727 9074 3705 9079
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 11:07 AM CDT | Areal Flood Warning | LSX | Crawford, Franklin, Iron, Jefferson, Madison, Reynolds and 3 more | 24 hr |
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.