Alert archive / Missouri / Flash Flood Warnings in 2011

Flash Flood Warning 53, NWS Paducah, KY

April 30, 2011Carter County, Wayne County, Missouri

NWS Paducah, KY issued this flash flood warning at Apr 30, 2011, 9:57 PM CDT for Carter County, Wayne 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
Apr 30, 2011, 9:57 PM CDT (02:57 UTC)
Expired
May 1, 2011, 2:00 AM CDT
In force
4 hr
Issued by
NWS Paducah, KY
Area
Storm-based polygon
Flood severity
None

Counties Carter County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 154 km from the middle of the area, began a volume at 03:01 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

Little Rock, AR (KLZK), launched 00:00Z, 3.0 hours before the alert went out and 254 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.

Skew-T log-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2011-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1745 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2011-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 281 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1745 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
528 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
281 m²/s²
0-3 km storm-relative helicity
322 m²/s²
Significant tornado parameter
3.2
Supercell composite
14.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

407 
WGUS53 KPAH 010257
FFWPAH
MOC035-223-010700-
/O.NEW.KPAH.FF.W.0053.110501T0257Z-110501T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
957 PM CDT SAT APR 30 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN CARTER COUNTY IN SOUTHEAST MISSOURI...
  WAYNE COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 200 AM CDT.

* AT 951 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS CAPABLE OF PROUCING LOCALLY HEAVY RAINFALL AND FLASH 
FLOODING OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE...
  ELLSINORE...
  HUNTER...
  WILLIAMSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. 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.

&&

LAT...LON 3683 9096 3710 9078 3714 9078 3717 9075
      3727 9074 3727 9056 3731 9055 3731 9022
      3709 9022 3709 9012 3705 9011 3705 9015
      3702 9015 3692 9025 3693 9068 3683 9069

$$
1 follow-up statement
872 
WGUS73 KPAH 010527
FFSPAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
1227 AM CDT SUN MAY 1 2011

MOC035-223-010700-
/O.CON.KPAH.FF.W.0053.000000T0000Z-110501T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE MO-CARTER MO-
1227 AM CDT SUN MAY 1 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
EASTERN CARTER AND WAYNE COUNTIES IN SOUTHEAST MISSOURI...

AT 1226 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE HEAVIEST RAIN HAD MOVED EAST OF THE WARNED AREA. HOWEVER... 
RUNOFF FROM HEAVY RAINS SATURDAY EVENING MAY CONTINUE TO RESULT IN 
RISING WATERS...ESPECIALLY IN SMALLER CREEKS...STREAMS...AND 
DRAINAGE SYSTEMS PRONE TO FLASH FLOODING. LOCALIZED WATER PROBLEMS 
REMAIN A CONCERN GIVEN THE ALREADY SATURATED GROUNDS IN PLACE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. 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.

&&

LAT...LON 3683 9096 3710 9078 3714 9078 3717 9075
      3727 9074 3727 9056 3731 9055 3731 9022
      3709 9022 3709 9012 3705 9011 3705 9015
      3702 9015 3692 9025 3693 9068 3683 9069

$$

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 9:51 PM CDTFlash Flood WarningPAHButler, Ripley4 hr
Apr 30, 10:31 PM CDTSevere Thunderstorm WarningPAHButler, Stoddard, Wayne29 min
Apr 30, 10:55 PM CDTFlash Flood WarningPAHBollinger, Cape Girardeau, Perry, Scott, Stoddard4 hr
Apr 30, 11:23 PM CDTSevere Thunderstorm WarningPAHStoddard37 min
Apr 30, 11:39 PM CDTSevere Thunderstorm WarningPAHStoddard26 min
May 1, 1:47 AM CDTRiver Flood WarningPAHButler5 days
May 1, 2:39 PM CDTFlash Flood WarningPAHMississippi, New Madrid4 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.