Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 128, NWS Tulsa, OK

May 26, 1997Craig County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 26, 1997, 12:32 AM CDT for Craig County, Ottawa County, Oklahoma. It was in force for 43 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: May 26, 1997, 12:32 AM CDT (05:32 UTC)
Expired: May 26, 1997, 1:15 AM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Craig County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 85 km from the middle of the area, began a volume at 05:31 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.

Issued	Product	Office	Lasted
May 25, 8:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.5 hours before the alert went out and 108 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.

520 
WUUS1 KTUL 260533 RRA
SVRTUL
OKC035-115-260615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1232 AM CDT MON MAY 26 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  115 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN CRAIG COUNTY...NORTHERN OTTAWA COUNTY
 
AT 1231 AM...RADAR SHOWED A SEVERE THUNDERSTORM 8 MILES WEST NORTHWEST
OF WELCH. THE STORM WAS MOVING EAST SOUTHEAST AT 20 MILES AN HOUR. WELCH
AND MIAMI ARE IN THE PATH OF THIS STORM.
 
 
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO RAPIDLY
CHANGING WEATHER CONDITIONS.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

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 May 25, 9:00 PM CDT, 3 hours 32 minutes earlier.

Area forecast discussion, May 25, 9:00 PM CDT, 3 hours 32 minutes before

FPUS3 KTUL 260155
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
900 PM CDT SUN MAY 25 1997

MID-LEVEL WARMING A BIT STRONGER THAN ANTICIPATED AS PER 00Z OUN
SOUNDING...ALTHO THIS MAY HAVE BEEN THE RESULT OF SUBSIDENCE
SURROUNDING SUPERCELLS TO THE S OF RAOB SITE.  LACK OF WIDESPREAD
CONVECTION OVER FA SUGGESTS COMBINATION OF MID-LEVEL
WARMING...EARLY AFTERNOON CLOUD COVER...AND MORNING PRECIP
FOOTPRINT PLAYED ROLE.

STILL...GOOD CONVERGENCE ALONG DRYLINE IN KS...AMPLE SFC
MOISTURE...AND MID-LEVEL JET MAX PUNCHING INTO CENTRAL PLAINS BODE
WELL FOR SEVERE POTENTIAL ALONG NRN ZNS.  WILL DECREASE POPS FOR
FIRST PD IN MOST ZNS EXCEPT NRNMOST AND EXTREME SE WHERE CENTRAL OK
STORMS WILL LIKELY TRACK.  ALL PROFILER DATA EAST OF DRYLINE SHOW
IMPRESSIVE HODOGRAPHS...SO SUPERCELLS ARE STILL A GOOD POSSIBILITY
IF INSTABILITY CAN BE RELEASED.

/27

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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 10:14 PM CDT	Severe Thunderstorm Warning	TSA	Osage	61 min
May 25, 10:23 PM CDT	Severe Thunderstorm Warning	TSA	Osage	52 min
May 25, 10:40 PM CDT	Tornado Warning	TSA	Osage	35 min
May 25, 11:59 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	31 min
May 26, 5:54 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	51 min
May 26, 5:54 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	51 min
May 26, 6:02 PM CDT	Severe Thunderstorm Warning	TSA	Creek	43 min
May 26, 6:20 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee, Tulsa	40 min
May 26, 6:24 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	51 min
May 26, 6:32 PM CDT	Tornado Warning	TSA	Okfuskee	28 min
May 26, 6:34 PM CDT	Tornado Warning	TSA	Creek, Tulsa	41 min
May 26, 6:43 PM CDT	Tornado Warning	TSA	Osage	47 min
May 26, 6:47 PM CDT	Tornado Warning	TSA	Okmulgee	43 min
May 26, 6:52 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	53 min
May 26, 6:57 PM CDT	Tornado Warning	TSA	Osage, Tulsa	48 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997 Every 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.