Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 72, NWS Springfield, MO

August 20, 2002Benton County, Morgan County, Missouri

NWS Springfield, MO issued this flash flood warning at Aug 20, 2002, 2:20 AM CDT for Benton County, Morgan County, Missouri. It was in force for 6 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 20, 2002, 2:20 AM CDT (07:20 UTC)
Expired
Aug 20, 2002, 8:30 AM CDT
In force
6 hr
Issued by
NWS Springfield, MO
Area
Counties, with a storm outline in the text

Counties Benton County, MO, Morgan County, MO

The radar

The Pleasant Hill radar (KEAX), 118 km from the middle of the area, began a volume at 07:24 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, 7.3 hours before the alert went out and 182 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, Springfield, MO at 00:00Z on 2002-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3042 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, Springfield, MO at 00:00Z on 2002-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
3042 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1610 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
16 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 KSGF 200720
FFWSGF
MOC015-141-201330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
219 AM CDT TUE AUG 20 2002

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN MISSOURI
  MORGAN COUNTY IN MISSOURI

* UNTIL 830 AM CDT

* AT 216 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
  DOPPLER RADAR ESTIMATED BETWEEN 1 AND 2 INCHES OF RAINFALL OVER
  THE WARNED AREA...ON TOP OF 2 TO 3 INCHES FROM PREVIOUS STORMS.

* SLOW MOVING 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 FLOODING
  INCLUDE...WARSAW...VERSAILLES...STOVER...LINCOLN AND COLE CAMP.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN
THE WARNED AREA.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3870 9307 3870 9284 3861 9286 3843 9263
          3835 9264 3835 9269 3823 9270 3823 9294
          3826 9304 3827 9310 3807 9307 3808 9351
          3851 9352 3851 9329 3854 9308

LINDENBERG
2 follow-up statements
109 
RWUS32 KSGF 201022
FFSSGF
MOC015-141-201330-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
522 AM CDT TUE AUG 20 2002

...FLASH FLOOD WARNING CONTINUES UNTIL 830 AM CDT FOR BENTON AND
MORGAN COUNTIES...

AT 520 AM...WEATHER SERVICE DOPPLER RADAR SHOWED THE HEAVY RAIN 
WHICH ORIGINALLY PROMPTED THE FLASH FLOOD WARNING HAS PUSHED OFF TO 
THE SOUTHEAST.  DOPPLER RADAR ESTIMATED BETWEEN 3 AND 4 INCHES OF 
RAINFALL OCCURRED ACROSS PORTIONS OF BENTON AND MORGAN COUNTIES 
OVERNIGHT.  WHILE NO REPORTS OF FLOODING HAVE BEEN RECEIVED...THERE 
ARE LIKELY SOME LOW WATER CROSSINGS WHICH ARE UNDER WATER...LEAVING 
THEM UNABLE TO DRIVE THROUGH.

THE WATER SHOULD CONTINUE TO RECEDE FOR THE NEXT SEVERAL HOURS WITH 
NO ADDITIONAL RAINFALL EXPECTED DURING THAT TIME.

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

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3854 9327 3854 9307 3868 9306 3868 9285
          3860 9286 3844 9264 3836 9265 3836 9270
          3822 9271 3821 9282 3821 9291 3825 9294
          3826 9301 3830 9309 3821 9310 3817 9309
          3807 9307 3808 9350 3814 9350 3819 9350
          3822 9352 3842 9351 3851 9351 3850 9328

LINDENBERG
354 
RWUS32 KSGF 201216
FFSSGF
MOC015-141-201230-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
716 AM CDT TUE AUG 20 2002

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR BENTON AND MORGAN
COUNTIES HAS BEEN CANCELLED...

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.

LINDENBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 7:25 PM CDTSevere Thunderstorm WarningSGFWright50 min
Aug 19, 7:55 PM CDTSevere Thunderstorm WarningSGFPulaski50 min
Aug 19, 8:05 PM CDTSevere Thunderstorm WarningSGFPolk40 min
Aug 19, 8:14 PM CDTSevere Thunderstorm WarningSGFWebster46 min
Aug 19, 8:34 PM CDTSevere Thunderstorm WarningSGFPhelps41 min
Aug 19, 8:44 PM CDTSevere Thunderstorm WarningSGFDallas, Polk46 min
Aug 19, 9:16 PM CDTSevere Thunderstorm WarningSGFGreene44 min
Aug 19, 9:30 PM CDTSevere Thunderstorm WarningSGFDade, Polk45 min
Aug 19, 9:33 PM CDTSevere Thunderstorm WarningSGFDent42 min
Aug 19, 9:38 PM CDTSevere Thunderstorm WarningSGFPhelps37 min
Aug 19, 9:56 PM CDTTornado WarningSGFDent49 min
Aug 19, 10:04 PM CDTFlash Flood WarningSGFDent6 hr
Aug 20, 2:12 AM CDTFlash Flood WarningSGFMaries, Phelps6 hr

Nearby

Flash Flood Warnings in Missouri, 2002Every flash flood warning in 2002

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.