Alert archive / Oklahoma / Flash Flood Warnings in 1997

Flash Flood Warning 7, NWS Tulsa, OK

May 7, 1997Pawnee County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at May 7, 1997, 10:52 PM CDT for Pawnee County, Oklahoma. 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
May 7, 1997, 10:52 PM CDT (03:52 UTC)
Expired
May 8, 1997, 2:45 AM CDT
In force
4 hr
Issued by
NWS Tulsa, OK
Area
Whole counties

County Pawnee County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.9 hours before the alert went out and 137 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, Norman, OK at 00:00Z on 1997-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1687 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, Norman, OK at 00:00Z on 1997-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.19395878Sfc1 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
1687 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
783 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
230 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 080352
FFWTUL
OKC117-080745-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1052 PM CDT WED MAY 7 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN PAWNEE COUNTY
 
RADAR INDICATES THAT UP TO 1.75 INCHES OF RAIN HAS FALLEN IN PARTS OF
NORTHERN PAWNEE COUNTY BETWEEN 945 AND 1045 PM. ADDITIONAL THUNDERSTORMS
WILL MOVE ACROSS THIS AREA AND PRODUCE MORE HEAVY RAIN. THIS ADDITIONAL
RAINFALL WILL LIKELY RESULT IN FLASH FLOODING.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS LIKELY OR HAS BEEN
REPORTED.  STAY ALERT AND WATCH FOR RAPIDLY RISING WATER.
REMEMBER...IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO THE
NEAREST STREAM...CREEK OR RIVER WHICH CAN BECOME A KILLER DURING
PERIODS OF HEAVY RAIN.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
 
 *

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 8:36 PM CDTTornado WarningTSAOsage, Pawnee54 min
May 7, 9:24 PM CDTTornado WarningTSAOsage, Pawnee66 min
May 7, 9:48 PM CDTFlash Flood WarningTSAOsage5 hr
May 7, 10:15 PM CDTTornado WarningTSAOsage60 min
May 7, 10:39 PM CDTTornado WarningTSATulsa, Washington51 min
May 7, 10:45 PM CDTSevere Thunderstorm WarningTSAPawnee45 min
May 7, 11:27 PM CDTSevere Thunderstorm WarningTSAPawnee48 min
May 7, 11:37 PM CDTSevere Thunderstorm WarningTSAOsage68 min
May 8, 12:03 AM CDTSevere Thunderstorm WarningTSACreek, Tulsa42 min
May 8, 12:38 AM CDTSevere Thunderstorm WarningTSATulsa52 min
May 8, 1:11 AM CDTSevere Thunderstorm WarningTSARogers, Wagoner49 min
May 8, 2:09 AM CDTSevere Thunderstorm WarningTSAAdair, Cherokee51 min

Nearby

Flash Flood Warnings in Oklahoma, 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.