Alert archive / Missouri / Flash Flood Warnings in 2013

Flash Flood Warning 13, NWS St. Louis, MO

May 30, 2013Adams County, Pike County, Illinois; Lewis County, Marion County, Ralls County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 30, 2013, 5:01 PM CDT for Adams County, Pike County, Illinois; Lewis County, Marion County, Ralls County, 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
May 30, 2013, 5:01 PM CDT (22:01 UTC)
Expired
May 30, 2013, 11:00 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Adams County, IL, Pike County, IL, Lewis County, MO, Marion County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 142 km from the middle of the area, began a volume at 22:05 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

TimeReportWhereRemark
May 30, 5:06 PM CDTHEAVY RAIN 1.5Hannibal, MORAINFALL SINCE 4 PM.
May 30, 5:57 PM CDTFLOODHannibal, MOSTANDING WATER IN SEVERAL STREETS SOUTH SIDE OF HANNIBAL.
May 30, 6:02 PM CDTFLASH FLOOD2 S Hannibal, MOBEAR CREEK RUNNING OUT OF ITS BANKS FLOODING TRAILERS.
May 30, 7:14 PM CDTFLASH FLOOD2 Sse Hannibal, MOFLOWING WATER OF UNKNOWN DEPTH ON MISSOURI HIGHWAY 79 AT MONKEYRUN TRAIL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.0 hours before the alert went out and 207 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, Davenport, at 12:00Z on 2013-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 378 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2013-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.193958Sfc1 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
378 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

138 
WGUS53 KLSX 302201
FFWLSX
ILC001-149-MOC111-127-173-310400-
/O.NEW.KLSX.FF.W.0013.130530T2201Z-130531T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
501 PM CDT THU MAY 30 2013

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  EASTERN MARION COUNTY IN NORTHEAST MISSOURI...
  RALLS COUNTY IN NORTHEAST MISSOURI...
  SOUTHEASTERN LEWIS COUNTY IN NORTHEAST MISSOURI...
  WEST CENTRAL PIKE COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 1100 PM CDT

* AT 445 PM CDT...TRAINED WEATHER SPOTTERS REPORTED THAT WATER WAS
  FLOWING EIGHT INCHES DEEP OVER HIGHWAY 168 NEAR HIGHWAY 61 ON THE
  NORTH SIDE OF HANNIBAL.  DOPPLER RADAR ESTIMATES THAT BETWEEN ONE
  AND TWO INCHES OF RAIN HAS FALLEN BETWEEN NEW LONDON AND QUINCY IN
  THE LAST HOUR.  THUNDERSTORMS WILL CONTINUE TO MOVE NORTHEAST OVER
  THE WARNED AREA THAT MAY PRODUCE ANOTHER 1 TO 2 INCHES OF RAIN IN 
  THE NEXT FEW HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  HANNIBAL...PALMYRA...QUINCY...BARRY... MAYWOOD... NEW LONDON...
  PAYSON...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.

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.

&&

LAT...LON 4020 9092 3976 9092 3946 9144 3945 9172
      3971 9171 3996 9161 4020 9148

$$

BRITT
2 follow-up statements
500 
WGUS73 KLSX 310053
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
753 PM CDT THU MAY 30 2013

ILC001-149-MOC111-127-173-310400-
/O.CON.KLSX.FF.W.0013.000000T0000Z-130531T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-ADAMS IL-LEWIS MO-MARION MO-RALLS MO-
753 PM CDT THU MAY 30 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR ADAMS AND WEST CENTRAL
PIKE COUNTIES IN WEST CENTRAL ILLINOIS...AND RALLS...EASTERN MARION
AND SOUTHEASTERN LEWIS COUNTIES IN NORTHEAST MISSOURI UNTIL 1100 PM
CDT...

AT 742 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORMS THAT PRODUCED BETWEEN 1 AND 3 INCHES OF 
RAINFALL THIS EVENING HAS MOVED OUT OF THE AREA.  WATER WAS REPORTED 
FLOWING OVER HIGHWAY 79 JUST SOUTHEAST OF HANNIBAL.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...HANNIBAL... 
PALMYRA...QUINCY...BARRY...BEVERLY...CENTER...FALL CREEK...NEW 
LONDON...PAYSON...RENSSELAER AND SPAULDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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.

&&

LAT...LON 4020 9092 3976 9092 3946 9144 3945 9172
      3971 9171 3996 9161 4020 9148

$$

BRITT
058 
WGUS73 KLSX 310359
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1059 PM CDT THU MAY 30 2013

ILC001-149-MOC111-173-310414-
/O.EXP.KLSX.FF.W.0013.000000T0000Z-130531T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIKE IL-ADAMS IL-LEWIS MO-RALLS MO-
1059 PM CDT THU MAY 30 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR ADAMS AND WEST 
CENTRAL PIKE COUNTIES IN WEST CENTRAL ILLINOIS...AND RALLS...AND 
SOUTHEASTERN LEWIS COUNTIES IN NORTHEAST MISSOURI WILL BE ALLOWED TO 
EXPIRE AT 1100 PM CDT...

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 4020 9092 3976 9092 3946 9144 3945 9172
      3971 9171 3996 9161 4020 9148

$$

TES

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 4:03 AM CDTFlash Flood WatchLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more51 hr
May 30, 5:09 PM CDTSevere Thunderstorm WarningLSXCalhoun, Greene, Pike51 min
May 30, 5:51 PM CDTSevere Thunderstorm WarningLSXRandolph39 min
May 30, 6:09 PM CDTSevere Thunderstorm WarningLSXSaint Clair36 min
May 30, 6:24 PM CDTSevere Thunderstorm WarningLSXRandolph, Saint Clair, Washington36 min
May 30, 6:38 PM CDTSevere Thunderstorm WarningLSXCalhoun37 min
May 30, 6:52 PM CDTSevere Thunderstorm WarningLSXBond, Clinton, Madison38 min
May 29, 10:23 PM CDTRiver Flood WarningLSXBoone, Callaway, Cole, Moniteau7 days
May 29, 10:23 PM CDTRiver Flood WarningLSXCallaway, Osage8 days
May 29, 10:23 PM CDTRiver Flood WarningLSXGasconade, Montgomery9 days
May 30, 10:02 AM CDTRiver Flood WarningLSXFranklin, Warren8 days
May 30, 10:02 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis9 days
May 30, 2:38 PM CDTSevere Thunderstorm WarningLSXKnox22 min
May 30, 4:30 PM CDTFlash Flood WarningLSXAudrain, Boone, Callaway, Cole, Moniteau6 hr

Nearby

Flash Flood Warnings in Missouri, 2013Flash Flood Warnings in Illinois, 2013Every flash flood warning in 2013

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.