Alert archive / Missouri / Flash Flood Warnings in 1997

Flash Flood Warning 8, NWS St. Louis, MO

June 22, 1997Montgomery County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jun 22, 1997, 1:15 AM CDT for Montgomery 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
Jun 22, 1997, 1:15 AM CDT (06:15 UTC)
Expired
Jun 22, 1997, 5:15 AM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

County Montgomery County, MO

The radar

The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 06:14 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

Lincoln, IL (KILX), launched 00:00Z, 6.3 hours before the alert went out and 280 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, Lincoln, IL at 00:00Z on 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 301 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
301 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1421 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 220616
FFWSTL
MOC139-221015-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
115 AM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  515 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL MISSOURI
 
   ...MONTGOMERY COUNTY
 
AT 1 AM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF VERY
HEAVY THUNDERSTORMS FROM JUST WEST OF COLUMBIA EAST SOUTHEAST THROUGH
MONTGOMERY COUNTY TO 40 MILES SOUTH OF ST LOUIS.
 
SINCE MIDNIGHT THE STORMS TO THE WEST OF MONTGOMERY COUNTY HAVE BEEN
STRENGTHENING. EACH STORM HAS BEEN FOLLOWING THE PREVIOUS STORM IN
A SIMILAR PATH AND WILL BE MOVING ACROSS THE COUNTY FOR THE NEXT SEVERAL
HOURS. COPIOUS AMOUNTS OF RAIN CAN FALL IN A SHORT PERIOD OF TIME.
 
EXERCISE GREAT CAUTION IF YOU ARE TRAVELLING...ESPECIALLY IN SECONDARY
ROADS. THIS IS EVOLVING INTO A VERY DANGEROUS SITUATION. BE CAREFUL!
 
FLASH FLOODING IS THE LEADING WEATHER RELATED KILLER ACROSS THE
UNITED STATES. NEVER UNDERESTIMATE THE POWER OF FLOWING WATER.
MOVE TO HIGHER GROUND IMMEDIATELY WHEN FLOODING THREATENS. YOUR
LIFE MAY DEPEND ON IT.
 
PEDIGO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:39 PM CDTSevere Thunderstorm WarningLSXWashington51 min
Jun 21, 8:31 PM CDTSevere Thunderstorm WarningLSXWashington44 min
Jun 21, 10:22 PM CDTSevere Thunderstorm WarningLSXFranklin, Gasconade68 min
Jun 21, 11:45 PM CDTFlash Flood WarningLSXCrawford, Franklin, Jefferson, Washington5 hr
Jun 22, 12:48 AM CDTFlash Flood WarningLSXWarren4 hr
Jun 22, 2:49 AM CDTFlash Flood WarningLSXCallaway3 hr
Jun 22, 3:44 AM CDTFlash Flood WarningLSXAudrain3 hr
Jun 22, 4:50 AM CDTFlash Flood WarningLSXAudrain, Callaway, Monroe, Montgomery4 hr
Jun 22, 4:50 AM CDTFlash Flood WarningLSXCrawford, Gasconade4 hr
Jun 22, 5:41 AM CDTFlash Flood WarningLSXBoone3 hr
Jun 22, 7:05 AM CDTFlash Flood WarningLSXShelby4 hr
Jun 22, 7:36 AM CDTFlash Flood WarningLSXKnox3 hr

Nearby

Flash Flood Warnings in Missouri, 1997Every flash flood warning in 1997

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.