Alert archive / Missouri / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS St. Louis, MO

May 26, 1997Cole County, Osage County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 26, 1997, 3:15 AM CDT for Cole County, Osage 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 counties it named.

The facts

Issued: May 26, 1997, 3:15 AM CDT (08:15 UTC)
Expired: May 26, 1997, 6:15 AM CDT
In force: 3 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Cole County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 123 km from the middle of the area, began a volume at 08:14 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

Springfield, MO (KSGF), launched 00:00Z, 8.3 hours before the alert went out and 233 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: 418 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1632 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 260821
FFWSTL
MOC051-151-261115-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
315 AM CDT MON MAY 26 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  615 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL MISSOURI
 
   ...COLE COUNTY...OSAGE COUNTY
 
BETWEEN 1 AND 3 AM...WEATHER SERVICE RADAR INDICATED BETWEEN 2 AND 3
INCHES OF RAIN FELL OVER PARTS OF COLE AND OSAGE COUNTIES IN
MID-MISSOURI. THESE RAINS...ALONG WITH THE RAINS OF EARLIER SUNDAY
EVENING...MAKES FLASH FLOODING LIKELY IN SOME AREAS.
 
THE HEAVIEST RAINS HAVE OCCURRED IN A NARROW AREA FROM JUST SOUTHWEST OF
BRAZITO...TO JUST WEST OF LINN.
 
IT APPEARS THAT ANOTHER INCH OF RAIN MAY FALL IN THESE AREAS...BEFORE
THE HEAVIEST RAINS COME TO AN END BY AROUND 5 AM.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODING. NEVER DRIVE OR WALK INTO FnLOOD WATER.
 
HOLIDAY CAMPERS SHOULD ALSO EXERCISE CAUTION...ESPECIALLY IF YOU ARE
NEAR A CREEK OR STREAM.  RAIN UPSTREAM MAY CAUSE FLASH FLOODING
AT YOUR LOCATION WITH LITTLE OR NO WARNING.
 
TRUETT/GKS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:13 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade	47 min
May 25, 7:14 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Louis	46 min
May 25, 7:36 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	54 min
May 25, 7:49 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	56 min
May 25, 8:12 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Warren	33 min
May 25, 8:18 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	42 min
May 25, 8:46 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	44 min
May 25, 9:24 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	51 min
May 25, 10:47 PM CDT	Severe Thunderstorm Warning	LSX	Washington	43 min
May 26, 4:43 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	47 min
May 26, 2:29 PM CDT	Severe Thunderstorm Warning	LSX	Madison	31 min
May 26, 5:39 PM CDT	Severe Thunderstorm Warning	LSX	Madison	51 min

Nearby

Flash Flood Warnings in Missouri, 1997 Every 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.