Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 2, NWS Tulsa, OK

January 21, 1997Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jan 21, 1997, 11:25 PM CST for Ottawa County, Oklahoma. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 21, 1997, 11:25 PM CST (05:25 UTC)
Expired
Jan 22, 1997, 12:15 AM CST
In force
50 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Ottawa County, OK

The radar

The Tulsa radar (KINX), 100 km from the middle of the area, began a volume at 05:28 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 21, 11:15 PM CSTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.4 hours before the alert went out and 90 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 1997-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1997-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 279 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
10 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
279 m²/s²
0-3 km storm-relative helicity
376 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.

208 
WUUS1 KTUL 220526
SVRTUL
OKC115-220615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED...CORRECTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1125 PM CST TUE JAN 21 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1215 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...SOUTHERN AND EASTERN OTTAWA COUNTY
 
AT 1122PM A LINE OF SEVERE THUDNERSTORMS EXTENDED ACROSS OTTAWA COUNTY
FROM 7 MILES EAST OF QUAPAW TO WYANDOTTE TO JUST SOUTH OF FAIRLAND TO
AFTON. THE LINE OF STORMS WAS MOVING EAST AT 30 MPH WHILE THE INDIVIDUAL
STORMS MOVED EAST NORTHEAST AT 40 MPH.
 
 
HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS.
TO PROTECT YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE
OR HAND HELD ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY.
MOTORISTS SHOULD BE ALERT FOR WATER ON ROADWAYS AND NEVER
DRIVE ONTO A FLOODED ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jan 21, 7:52 PM CST, 3 hours 33 minutes earlier.

Area forecast discussion, Jan 21, 7:52 PM CST, 3 hours 33 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
750 PM CST TUE JAN 21 1997

STILL WAITING FOR AND EXPECTING TSTM DEVELOPMENT THIS EVENING BUT
NOTHING GOING ON ATTM. SFC TROF/COLD FRONT HAS PUSHED INTO THE FAR NW
PART OF THE FCST AREA AND IS NEARING THE BETTER MOISTURE SO MAY SEE
TSTM DEVELOPMENT DURING THE NEXT 1-2 HOURS. BEST CHANCES FOR TSTMS WILL
BE ALONG AND SOUTHEAST OF I-44 WITH TSTMS EXPECTED TO ORGANIZE INTO A
SQUALL LINE OVERNIGHT.

CURRENT FCST HAS THE SITUATION COVERED AND DO NOT PLAN ON ANY UPDATES
ATTM. UPDATES WILL LIKELY BE NEEDED LATER ONCE TSTMS DEVELOP TO BETTER
TIME THE ENDING OF PRECIP.

.TUL...
OK...NONE.
AR...NONE.

PLATE2

In the hours before

Local storm report, Jan 21, 6:00 PM CST, 5 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
600 PM CST TUE JAN 21 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0556 PM    TULSA                     OK
01/21/97   TULSA                          TEST...TEST
Local storm report, Jan 21, 6:08 PM CST, 5 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
600 PM CST TUE JAN 21 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0556 PM    TULSA                     OK
01/21/97   TULSA                          TEST...TEST
Special weather statement, Jan 21, 6:34 PM CST, 4 hours 51 minutes before
OKZ054>071-073-220300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
635 PM CST TUE JAN 21 1997

THE WIND ADVISORY WHICH HAD BEEN IN EFFECT FOR MUCH OF EASTERN OKLAHOMA
THIS AFTERNOON HAS E$XPIRED. SOUTH WINDS WHICH HAD GUSTED OVER 40 MILES
AN HOUR IN SOME AREAS THIS AFTERNOON HAVE DIMINISHED INTO THE 10 TO 20
MILE AN HOUR RANGE AND SHOULD REMAIN IN THAT RANGE THROUGH THE EVENING.
Special weather statement, Jan 21, 6:35 PM CST, 4 hours 50 minutes before
OKZ054>071-073-220300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
635 PM CST TUE JAN 21 1997

THE WIND ADVISORY WHICH HAD BEEN IN EFFECT FOR MUCH OF EASTERN OKLAHOMA
THIS AFTERNOON HAS EXPIRED. SOUTH WINDS WHICH HAD GUSTED OVER 40 MILES
AN HOUR IN SOME AREAS THIS AFTERNOON HAVE DIMINISHED INTO THE 10 TO 20
MILE AN HOUR RANGE AND SHOULD REMAIN IN THAT RANGE THROUGH THE EVENING.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 10:46 PM CSTSevere Thunderstorm WarningTSAOttawa44 min
Jan 22, 12:22 AM CSTSevere Thunderstorm WarningTSALeFlore53 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997Every severe thunderstorm 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.