Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 280, NWS Tulsa, OK

July 17, 1997Creek County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 17, 1997, 8:14 PM CDT for Creek County, Oklahoma. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 17, 1997, 8:14 PM CDT (01:14 UTC)
Expired: Jul 17, 1997, 9:00 PM CDT
In force: 46 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Creek County, OK

What was reported inside it

Time	Report	Where	Remark
Jul 17, 8:50 PM CDT	Thunderstorm Wind 52	Drumright, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.2 hours before the alert went out and 120 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: 1936 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1989 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

825 
WUUS1 KTUL 180116 RRA
SVRTUL
OKC037-180200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
814 PM CDT THU JUL 17 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  900 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN CREEK COUNTY
 
AT 8 12 PM SEVERE THUNDERSTORMS WERE LOCATED FROM BLACKBURN TO NEAR
STILLWATER. MOVEMENT WAS TO THE SOUTHEAST AT 10 MILES AN HOUR. MANNFORD
AND OILTON ARE IN THE PATH OF THE STORM.
 
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 80 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
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 Jul 17, 3:42 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Jul 17, 3:42 PM CDT, 4 hours 32 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
340 PM CDT THU JUL 17 1997

UPPER LOW OVER OSAGE COUNTY CONTINUES TO FOCUS CONVECTION OVER
WATER-LOGGED NWRN ZONES...MEANWHILE OTHER STRONG CONVECTION HAS
FIRED UP ALONG OUTFLOW BOUNDARY IN OKFUSKEE AND OKMULGEE COUNTIES.
FEEL THAT UPPER-LOW WILL BE THE MAJOR PLAYER IN THE PRECIP GAME
OVER NEXT 24 HOURS.  WILL GO WITH ETA/AVN MOVEMENT OF THIS FEATURE
AND ASSOCIATED PRECIP.  BOTH OF THESE MODELS SLIDE THE LOW SLOWLY
WEST OR SOUTHWEST OVER THE NEXT 36 HOURS AS UPPER RIDGE WEAKENS
WITH THE APPROACH OF T.S. DANNY.

WILL EXTEND/EXPAND FFA FROM OSAGE TO OKFUSKEE COUNTY FOR TONIGHT AS
UPPER-LOW MOVES SLOWLY SOUTHWESTWARD NEAR THAT AREA.  EACH OF THESE
COUNTIES HAS ALREADY HAD AT LEAST LOCALLY HEAVY RAIN TODAY...WITH
WIDESPREAD HEAVY RAIN OVER OSAGE AND PAWNEE COUNTIES.

FURTHER EAST AND SOUTH EXPECT THAT WIDELY SCATTERED SHRA/TSRA WILL
DISSIPATE EARLY THIS EVENING. WILL GET LAST LOOK AT RADAR BEFORE
ADDING EVENING POPS ACROSS THESE AREAS.

WILL LIKELY SEE SOME REMNANT SHRA/TSRA OVER WATCH AREA INTO THE
MORNING HOURS TOMORROW...BEFORE IT MOVES COMPLETELY OUT OF THE
AREA.  THEREFORE WILL LEAVE CHANCE POPS IN WRN ZONES TOMORROW WITH
WDLY SCT CONVECTION EXPECTED AGAIN TOMORROW AFTERNOON OVER ENTIRE
FA.  THE APPROACH OF T.S. DANNY TO GULF COAST MAY HELP SUPPRESS
THIS DIURNAL ACTIVITY ON SATURDAY...BUT WITH WEAK CAP AND SOME
INSTABILITY WILL LEAVE SLT CHC IN FOR ENTIRE AREA ON SAT.

AS FOR TEMPS FWC/FAN ARE IN VERY GOOD AGREEMENT...BUT NEITHER ONE
OF THEM THINK IT WILL RAIN.  ONLY DEVIATION FROM MOS TEMPS WILL BE
TO COOL THINGS OFF WHERE RAIN IS EXPECTED.

...19...

...:PRELIM NUMBERS...
TUL 72/91 74/93 4412
FSM 72/95 70/94 1212
MLC 71/93 72/93 3312
BVO 68/90 71/94 5412
FYV 67/91 68/91 1212
IDB 69/95 69/94 1212
BYV 66/92 67/92 1212

.TUL...
OK...FFA TONIGHT ZNS 54/59/64/65.
AR...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:07 PM CDT	Tornado Warning	TSA	Osage	38 min
Jul 17, 7:37 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	53 min
Jul 17, 7:48 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee	6 hr
Jul 17, 8:22 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	53 min
Jul 17, 8:57 PM CDT	Severe Thunderstorm Warning	TSA	Creek	48 min
Jul 17, 9:11 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	49 min
Jul 17, 9:29 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	46 min
Jul 17, 11:09 PM CDT	Flash Flood Warning	TSA	Creek	3 hr
Jul 18, 12:42 AM CDT	Flash Flood Warning	TSA	Okfuskee	3 hr
Jul 18, 1:40 AM CDT	Flash Flood Warning	TSA	Osage, Pawnee	6 hr
Jul 18, 3:37 AM CDT	Flash Flood Warning	TSA	Okfuskee	4 hr
Jul 18, 7:43 AM CDT	Flash Flood Warning	TSA	Osage, Pawnee	3 hr

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.