Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 68, NWS Springfield, MO

August 18, 2002Maries County, Missouri

NWS Springfield, MO issued this flash flood warning at Aug 18, 2002, 10:13 AM CDT for Maries 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 as issued.

The facts

Issued
Aug 18, 2002, 10:13 AM CDT (15:13 UTC)
Expired
Aug 18, 2002, 1:00 PM CDT
In force
3 hr
Issued by
NWS Springfield, MO
Area
Counties, with a storm outline in the text

County Maries County, MO

The radar

The St Louis radar (KLSX), 111 km from the middle of the area, began a volume at 15:16 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 12:00Z, 3.2 hours before the alert went out and 230 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 12:00Z on 2002-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1679 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2002-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 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
1679 J/kg
Mixed-layer CIN
-118 J/kg
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KSGF 181513
FFWSGF
MOC125-181800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1009 AM CDT SUN AUG 18 2002

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN MARIES COUNTY IN CENTRAL MISSOURI

* UNTIL 100 PM CDT

* AT 1005 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH TORRENTIAL RAINFALL APPROACHING THE WARNED AREA.
  DOPPLER RADAR ESTIMATED THAT BETWEEN 3 AND 4 INCHES HAVE ALREADY
  FALLEN THIS MORNING WITH EARLIER THUNDERSTORMS ACROSS NORTHERN AND
  EASTERN MARIES COUNTY. AN ADDITIONAL TWO INCHES OF RAINFALL ARE
  POSSIBLE WITH THUNDERSTORMS THAT WILL REACH THE AREA BY 1030 AM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  VIENNA AND AREAS ALONG THE GASCONADE RIVER AND ITS TRIBUTARIES.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF 
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. SPORT
UTILITY VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO SWIFTLY FLOWING 
WATERS. DO NOT DRIVE INTO FLOODED ROADWAYS...LOW WATER 
CROSSINGS...OR OTHER LOW SPOTS.

LAT...LON 3830 9164 3816 9164 3816 9208 3829 9208

BOOKBINDER
2 follow-up statements
813 
RWUS32 KSGF 181702
FFSSGF
MOC125-161-181900-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1200 PM CDT SUN AUG 18 2002

...A FLASH FLOOD WARNING CONTINUES UNTIL 100 PM CDT FOR EASTERN 
MARIES COUNTY...AND UNTIL 200 PM CDT FOR NORTHERN PHELPS COUNTIES...

AT 1156 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT 3 TO 5 INCHES OF RAIN HAD FALLEN ACROSS THE WARNED 
AREA...GENERALLY ALONG AND EAST OF A VIENNA TO ROLLA LINE. THIS 
INCLUDES LOCATIONS ALONG THE GASCONADE RIVER...BOURBEUSE RIVER...AND 
SPRING CREEK.

ALTHOUGH HEAVY RAINFALL HAS ENDED...RUNOFF FROM THIS EXCESSIVE 
RAINFALL HAS NOT YET COMPLETED. FLASH FLOOD IS LIKELY STILL ONGOING 
ACROSS MUCH OF THE WARNED AREA. DO NOT DRIVE THROUGH LOCATIONS WHERE 
YOU CANNOT DETERMINE THE WATER DEPTH. DIPS...LOW SPOTS...AND LOW 
WATER CROSSINGS ARE ESPECIALLY SUSCEPTIBLE TO FLOODING.

IF FLOODING IS OBSERVED...REPORT IT TO THE NEAREST LAW ENFORCEMENT 
AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE AFFECTED 
ROADWAYS.

LAT...LON 3832 9166 3821 9165 3818 9157 3778 9154
          3779 9185 3833 9218

BOOKBINDER
726 
RWUS32 KSGF 181807
FFSSGF
MOC125-181815-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
106 PM CDT SUN AUG 18 2002

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR MARIES COUNTY HAS 
BEEN ALLOWED TO EXPIRE...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS 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. ADDITIONAL RAINFALL IS NOT 
EXPECTED FOR THE REST OF THIS AFTERNOON

LAT...LON 3831 9166 3807 9167 3804 9204 3829 9219

BOOKBINDER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 10:55 AM CDTFlash Flood WarningSGFPhelps3 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.