Alert archive / Missouri / Flash Flood Warnings in 1998

Flash Flood Warning 25, NWS St. Louis, MO

July 26, 1998Crawford County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 26, 1998, 6:53 AM 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 counties it named.

The facts

Issued
Jul 26, 1998, 6:53 AM CDT (11:53 UTC)
Expired
Jul 26, 1998, 11:00 AM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Crawford County, MO

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 11:53 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, 11.9 hours before the alert went out and 251 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 1998-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 433 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 00:00Z on 1998-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
433 J/kg
Mixed-layer CIN
-217 J/kg
Mixed-layer LCL
1181 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 
TTAA00 KSTL 261155
FFWSTL
MOC055-261555-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
653 AM CDT SUN JUL 26 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 1100 AM CDT

* AT 645 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  WIDESPREAD SHOWERS AND THUNDERSTORMS ACROSS CRAWFORD COUNTY.

* RADAR HAS ESTIMATED 3 TO 5 INCHES OF RAIN HAS FALLEN ACROSS
  SOUTHWEST CRAWFORD COUNTY.  THE SHERIFF IN STEELVILLE REPORTED
  THAT A CREEK NEAR STEELVILLE WAS RUNNING FULL.

  A FLASH FLOOD MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
  RESIDENTS LIVING ALONG SMALL STREAMS AND FLOOD PRONE AREAS SHOULD
  TAKE IMMEDIATE ACTION WHEN FLOODING THREATENS. BE ESPECIALLY
  CAUTIOUS IF CAMPING NEAR A SMALL STREAM. RAIN UPSTREAM MAY CAUSE
  FLASH FLOODING AT YOUR LOCATION WITH LITTLE OR NO WARNING.

  TPS




 v

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 8:38 AM CDTFlash Flood WarningLSXIron, Madison, Reynolds5 hr
Jul 26, 10:14 AM CDTFlash Flood WarningLSXCrawford4 hr
Jul 26, 11:05 AM CDTFlash Flood WarningLSXCole, Moniteau3 hr
Jul 26, 11:05 AM CDTFlash Flood WarningLSXOsage3 hr

Nearby

Flash Flood Warnings in Missouri, 1998Every flash flood warning in 1998

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.