Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS St. Louis, MO

February 5, 2008Saint Charles County, Warren County, Missouri

NWS St. Louis, MO issued this flash flood warning at Feb 5, 2008, 3:37 PM CST for Saint Charles County, Warren County, Missouri. It was in force for 5 hr. 2 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: Feb 5, 2008, 3:37 PM CST (21:37 UTC)
Expired: Feb 5, 2008, 8:30 PM CST
In force: 5 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 18 km from the middle of the area, began a volume at 21:37 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
Feb 5, 4:10 PM CST	FLASH FLOOD	O'Fallon, MO	BRYAN ROAD NEAR HIGHWAY N CLOSED DUE TO FLOODING.
Feb 5, 5:47 PM CST	HEAVY RAIN 3.4	O'Fallon, MO	RAINFALL TODAY.

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 12:00Z, 9.6 hours before the alert went out and 239 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 860 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 54 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 052141
FFWLSX
MOC183-219-060230-
/O.NEW.KLSX.FF.W.0002.080205T2137Z-080206T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
337 PM CST TUE FEB 5 2008

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  WARREN COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 830 PM CST

* AT 332 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING OVER THE WARNED AREA. RADAR ESTIMATES 1 TO 2 INCHES 
  OF RAIN HAS FALLEN OVER EASTERN WARREN AND WESTERN ST. CHARLES     
  COUNTIES SINCE 1 PM.  EXPECT AN ADDITIONAL 1 TO 3 INCHES OVER      
  PORTIONS OF THIS WARNED AREA OVER THE NEXT FEW HOURS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING WRIGHT CITY...WEST ALTON...WENTZVILLE...WELDON SPRING...
  WARRENTON...TRUESDALE...ST. PETERS...ST. PAUL...ST. CHARLES...
  PORTAGE DES SIOUX...ORCHARD FARMS...OFALLON...NEW MELLE...LAKE ST.
  LOUIS...HARVESTER...DARDENNE PRAIRIE AND COTTLEVILLE.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 188 TO EXIT 229.


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.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 3889 9032 3882 9046 3869 9055 3868 9068
      3858 9078 3854 9092 3872 9142 3885 9142
      3885 9127 3900 9126 3899 9119 3893 9120
      3893 9112 3888 9111 3888 9081 3894 9067
      3887 9057 3897 9044 3883 9012 3881 9012
TIME...MOT...LOC 2137Z 180DEG 0KT 3868 9082

$$

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 4, 8:08 PM CST	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	52 min
Feb 4, 9:14 PM CST	Severe Thunderstorm Warning	LSX	Lincoln	31 min
Feb 4, 9:27 PM CST	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	48 min
Feb 4, 9:59 PM CST	Severe Thunderstorm Warning	LSX	Callaway, Osage	26 min
Feb 4, 10:13 PM CST	Severe Thunderstorm Warning	LSX	Gasconade, Lincoln, Montgomery, Warren	47 min
Feb 4, 10:57 PM CST	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	48 min
Feb 4, 11:37 PM CST	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	38 min
Feb 5, 4:20 AM CST	Winter Weather Advisory	LSX	Knox, Lewis, Marion, Shelby	35 hr
Feb 5, 3:08 PM CST	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Warren	39 min
Feb 5, 3:13 PM CST	Flash Flood Warning	LSX	Franklin, Gasconade, Osage	5 hr
Feb 5, 3:36 PM CST	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles	24 min
Feb 5, 3:56 PM CST	Severe Thunderstorm Warning	LSX	Saint Charles	35 min
Feb 5, 3:57 PM CST	Flash Flood Warning	LSX	Crawford	5 hr
Feb 5, 4:30 PM CST	Severe Thunderstorm Warning	LSX	Jefferson, Saint Francois, Washington	29 min
Feb 5, 5:35 PM CST	Severe Thunderstorm Warning	LSX	Crawford, Iron, Reynolds, Washington	26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.