Alert archive / Missouri / Flash Flood Warnings in 2001

Flash Flood Warning 22, NWS Springfield, MO

May 30, 2001St. Clair County, Missouri

NWS Springfield, MO issued this flash flood warning at May 30, 2001, 7:55 PM CDT for St. Clair County, Missouri. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 30, 2001, 7:55 PM CDT (00:55 UTC)
Expired: May 30, 2001, 11:00 PM CDT
In force: 3 hr
Issued by: NWS Springfield, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County St. Clair County, MO

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.9 hours before the alert went out and 128 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: 375 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 832 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 307 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KSGF 310058
FFWSGF
MOC185-310400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
755 PM CDT WED MAY 30 2001

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. CLAIR COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 1100 PM CDT

* AT 750 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAINFALL EXTENDING FROM OSCEOLA TO 
TIFFIN IN ST. CLAIR COUNTY...MOVING NORTHEAST AT 30 MPH. DOPPLER   
RADAR ESTIMATED HOURLY RAINFALL RATES OF ONE TO ONE AND A HALF 
INCHES WITH THESE STORMS.  RAINFALL AMOUNTS OF ONE TO TWO INCHES 
HAVE ALREADY FALLEN OVER THE WARNED AREA FROM PREVIOUS STORMS. 

* THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE WARNED 
AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH   
FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH   
FLOODING INCLUDE...LOWRY CITY AND OSCEOLA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE 
BANKS OF CREEKS AND STREAMS.

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMxPT TO
CROSS BRIDGES...DIPS...OR LOW WATER CROSSINGS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT.

LAT...LON 3804 9407 3790 9407 3790 9353 3820 9352
          3824 9396

FOSTER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 8:16 PM CDT	Tornado Warning	SGF	Camden, Morgan	29 min
May 30, 10:12 PM CDT	Flash Flood Warning	SGF	Benton, Camden, Morgan	3 hr
May 30, 11:45 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Ozark	45 min
May 31, 12:21 AM CDT	Severe Thunderstorm Warning	SGF	Oregon	39 min
May 31, 1:31 AM CDT	Flash Flood Warning	SGF	Benton, Camden, Morgan	3 hr

Nearby

Flash Flood Warnings in Missouri, 2001 Every flash flood warning in 2001

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.