Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 95, NWS St. Louis, MO

August 28, 2008Crawford County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 28, 2008, 11:51 PM CDT for Crawford 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: Aug 28, 2008, 11:51 PM CDT (04:51 UTC)
Expired: Aug 29, 2008, 3:45 AM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

County Crawford County, MO

The radar

The St Louis radar (KLSX), 109 km from the middle of the area, began a volume at 04:52 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, 4.9 hours before the alert went out and 247 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3067 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1463 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 290451
FFWLSX
MOC055-290845-
/O.NEW.KLSX.FF.W.0095.080829T0451Z-080829T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1151 PM CDT THU AUG 28 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 345 AM CDT

* AT 1147 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH    
  FLOODING OVER THE WARNED AREA.  THE CRAWFORD COUNTY SHERIFF        
  DEPARTMENT REPORTED FLASH FLOODING IN THE TOWN OF                  
  STEELVILLE.  ADDITIONAL FLASH FLOODING IS POSSIBLE COUNTY WIDE.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE       
  AFFECTING BUT NOT LIMITED TO STEELVILLE...LEASBURG...CUBA AND      
  BOURBON.

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 3770 9132 3778 9132 3779 9154 3821 9154
      3820 9110 3778 9111 3774 9111 3774 9116
      3770 9116

$$

CARNEY

1 follow-up statement

000 
WGUS73 KLSX 290847
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
347 AM CDT FRI AUG 29 2008

MOC055-290856-
/O.EXP.KLSX.FF.W.0095.000000T0000Z-080829T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CRAWFORD MO-
347 AM CDT FRI AUG 29 2008

...THE FLASH FLOOD WARNING HAS EXPIRED FOR CRAWFORD COUNTY...

A CHECK WITH AREA LAW ENFORCEMENT INDICATES THAT FLOODING IS NO
LONGER A PROBLEM IN THE AREA.

LAT...LON 3770 9132 3778 9132 3779 9154 3821 9154
      3820 9110 3778 9111 3774 9111 3774 9116
      3770 9116

$$

TILLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 7:00 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Monroe	45 min
Aug 28, 7:07 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion, Pike, Ralls	53 min
Aug 28, 7:21 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Gasconade, Lincoln, Montgomery, Osage and 1 more	39 min
Aug 28, 7:33 PM CDT	Severe Thunderstorm Warning	LSX	Pike	42 min
Aug 28, 7:47 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Franklin, Gasconade, Lincoln, Montgomery, Pike and 2 more	43 min
Aug 28, 9:19 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	41 min
Aug 28, 10:08 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Washington	37 min

Nearby

Flash Flood Warnings in Missouri, 2008 Every flash flood warning in 2008

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.