Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 98, NWS Tulsa, OK

April 14, 1998Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 14, 1998, 9:03 PM CDT for Osage County, Oklahoma. It was in force for 42 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: Apr 14, 1998, 9:03 PM CDT (02:03 UTC)
Expired: Apr 14, 1998, 9:45 PM CDT
In force: 42 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Osage County, OK

What was reported inside it

Time	Report	Where	Remark
Apr 14, 9:30 PM CDT	Hail 1	Bowring, 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 14, 3:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 2.1 hours before the alert went out and 97 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: 734 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1916 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

151 
WUUS54 KTSA 150205 RRA
SVRTUL
OKC113-150245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
903 PM CDT TUE APR 14 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHEASTERN OKLAHOMA

   ...NORTHERN OSAGE COUNTY

AT 900 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A SEVERE
THUNDERSTORM 10 MILES NORTHWEST OF PAWHUSKA. THE STORM WAS MOVING
EAST AT 35 MPH.

THIS STORM WILL TRACK BETWEEN PAWHUSKA AND BIGHEART.

HAIL TO THE SIZE OF NICKELS 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 FOR
RAPIDLY CHANGING WEATHER CONDITIONS.

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 Apr 14, 4:19 PM CDT, 4 hours 44 minutes earlier.

Area forecast discussion, Apr 14, 4:19 PM CDT, 4 hours 44 minutes before

FPUS3 KTUL 142120
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
419 PM CDT TUE APR 14 1998

SVR WX EPISODE BEGINNING TO UNFOLD ACRS THE AREA WITH AN ISOLD SVR
STORM ALG DRYLINE IN CNTRL OKLA AND SCTD AREAS OF TCU NEAR DRYLINE
UP INTO KS.  TOR WATCH BOX ALREADY IN PLACE THIS AFTN...AND EXPCT
MORE THRU THE NITE AS CONVECTION INCREASES ALG/AHEAD OF DRYLINE
THIS EVE AND SPREADS EWD. GREATEST COVERAGE OF STORMS XPCTD NORTH
OF ABOUT INTERSTATE 40...BUT SEVERE PSBL ANYWHERE IN AREA WITH
SHEAR PROFILES FAVBL FOR SUPERCELLS AND TORNADOES. SEVERE TSRA
MENTIONED IN ALL ZONES FOR TONITE...WITH HIEST POPS ACRS NRN 1/3
OF FCST AREA.

STG DRYING JUST ABOVE SURFACE WILL SWEEP ACRS THE AREA TONITE TO
THE SOUTH OF THE KS SHORTWV. ANY MORN SHRA/TSRA SHUD BE CONFINED
TO EXTREM ERN ZNS WHERE MSTR STILL DEEP ENUF TO SUPPORT CONVECTION
UNTIL 14 OR 15Z WEDS MORN. SFC WINDS SHUD QUICKLY VEER TO SW AND W IN
ALL AREAS BY EARLY AFTN AS VERY DRY ALF MIXES DOWN TO SFC.

COLD FRONT FCST TO MOVE INTO NRN ZONES WEDS EVE AND ACRS MOST OF
FCST AREA WEDS NITE/EARLY THURS. ETA TOO FAST WITH FRONTAL MOVMT WITH
NGM AND AVN IN DECENT AGREEMENT WITH A SLOWER MVMT. SHUD BE ENUF COLD
AIR ALF NEAR LO/MID LVL BAROCLINIC ZONE FOR SOME -SHRA ACRS NRN ZONES
WEDS NITE AND THURS...BUT WL KEEP POPS AT 20 FOR NOW GIVEN RELATIVELY
DRY LO LVLS. SE OKLA AND WEST CNTRL ARK SHUD REMAIN DRY WEDS NITE
AND THURS WITH PTLY CLDY SKIES XPCTD.

COOL WEATHER XPCTD BEHIND THE FRONT THURS INTO SAT. WL INTRO SLGT
CHC POPS FOR SAT AS A SHORTWV PROGD ACRS THE AREA...BUT FRI AND SUN
LOOK DRY.

FCSTID = 9
TUL   59  78  49  62 /  60  10  20  20
FSM   58  81  50  70 /  40  20  10  10
MLC   59  80  51  68 /  40  10  10  10
BVO   56  77  47  60 /  70  10  20  20
FYV   58  75  46  64 /  60  20  20  20
IDB   62  84  55  73 /  30  20  10  10
BYV   58  75  46  64 /  60  20  20  20
MIO   58  76  48  61 /  70  10  20  20
MKO   59  78  49  62 /  60  10  20  20
F10   59  78  49  62 /  60  10  20  20
HHW   62  84  55  73 /  30  20  10  10

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

In the hours before

Local storm report, Apr 14, 6:22 PM CDT, 2 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
622 PM CDT TUE APR 14 1998

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

0612 PM    1 S HALLETT               OK   1 INCH HAIL
04/14/98   PAWNEE

Local storm report, Apr 14, 6:35 PM CDT, 2 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
635 PM CDT TUE APR 14 1998

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

0625 PM    1 S CLEVELAND             OK   .88 INCH HAIL
04/14/98   PAWNEE

Local storm report, Apr 14, 7:09 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
709 PM CDT TUE APR 14 1998

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

0655 PM    1 W BURBANK               OK   .75 INCH HAIL
04/14/98   OSAGE

0700 PM    SHIDLER                   OK   1.75 INCH HAIL
04/14/98   OSAGE

Local storm report, Apr 14, 7:09 PM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
709 PM CDT TUE APR 14 1998

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

0655 PM    1 W BURBANK               OK   .75 INCH HAIL
04/14/98   OSAGE

0700 PM    SHIDLER                   OK   1.75 INCH HAIL
04/14/98   OSAGE

Special weather statement, Apr 14, 8:10 PM CDT, 53 minutes before

OKZ054>062-064>067-150300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
810 PM CDT TUE APR 14 1998

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN
NORTHEAST OKLAHOMA...

OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA...
ROGERS...MAYES...CREEK...OKFUSKEE...OKMULGEE AND WAGONER.

THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE TIME BEING ACROSS THIS
AREA. THERE IS STILL A CHANCE OF SEVERE THUNDERSTORMS DEVELOPING IN
PARTS OF NORTHEAST OKLAHOMA AFTER 10 PM.

Special weather statement, Apr 14, 8:10 PM CDT, 53 minutes before

OKZ054>062-064>067-150300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
810 PM CDT TUE APR 14 1998

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN
NORTHEAST OKLAHOMA...

OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA...
ROGERS...MAYES...CREEK...OKFUSKEE...OKMULGEE AND WAGONER.

THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE TIME BEING ACROSS THIS
AREA. THERE IS STILL A CHANCE OF SEVERE THUNDERSTORMS DEVELOPING IN
PARTS OF NORTHEAST OKLAHOMA AFTER 10 PM.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 9:30 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	45 min
Apr 14, 10:18 PM CDT	Severe Thunderstorm Warning	TSA	Osage	57 min
Apr 14, 10:21 PM CDT	Tornado Warning	TSA	Osage	54 min
Apr 15, 5:39 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	51 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998 Every severe thunderstorm warning in 1998

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.