Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 261, NWS Tulsa, OK

June 4, 1998Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 4, 1998, 9:54 PM CDT for Okmulgee County, Oklahoma. It was in force for 21 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: Jun 4, 1998, 9:54 PM CDT (02:54 UTC)
Expired: Jun 4, 1998, 10:15 PM CDT
In force: 21 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Okmulgee County, OK

The radar

The Tulsa radar (KINX), 69 km from the middle of the area, began a volume at 02:54 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.

What was reported inside it

Time	Report	Where	Remark
Jun 4, 10:13 PM CDT	Hail 0.88	Henryetta, OK	Location: intersection of I-40 and US Hwy 75

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, 2.9 hours before the alert went out and 138 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: 31 J/kg
Mixed-layer CIN: -569 J/kg
Mixed-layer LCL: 574 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 325 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 15.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 050254 RRA
SVRTUL
OKC111-050315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
954 PM CDT THU JUN 4 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  OKMULGEE COUNTY IN NORTHEASTERN OKLAHOMA

* UNTIL 1015 PM CDT

* AT 952 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM CENTERED 3 MILES NORTHEAST OF OKEMAH...MOVING
  NORTHEAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  OKMULGEE
  HENRYETTA

  GOLF BALL SIZE HAIL WAS REPORTED 2 MILES EAST OF CASTLE AT 945 PM.

  HAIL TO THE SIZE OF GOLF BALL AND WIND GUSTS TO 65 MPH CAN BE
  EXPECTED IN THE WARNED AREA.



BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

WHEN THUNDERSTORMS APPROACH...TAKE COVER INSIDE A STURDY BUILDING.
STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING STAY OFF
THE PHONE AND DON'T USE HAND HELD ELECTRICAL APPLIANCES. MOTORISTS
SHOULD NEVER DRIVE INTO AREAS WHERE WATER COVERS THE 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 Jun 4, 9:38 PM CDT, 16 minutes earlier.

Area forecast discussion, Jun 4, 9:38 PM CDT, 16 minutes before

FPUS3 KTUL 050240
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
938 PM CDT THU JUN 4 1998

BAND OF STG TO SVR TSRA CONTINUES FM NW AR INTO FAR SE OK...JUST AHD
OF SFC CD FNT.  ACTIVITY WL CONTINUE TO PUSH E OF AREA INTO BTR
INSTABILITY.  OTHER ISOLD TSRA HAVE DVLPD BEHIND THE SFC FNT ACRS
CNTRL OK...APPARENTLY IN ASSOCD WITH H85 FNT AND MIDLVL SHRTWV.

RAISED POPS SOME OVR ERN/SERN ZNS AND ADDED MENTION OF HVY RNFL FOR
SE OK.

FCSTID = 18
TUL   60  75  55  72 /  30  10   0   0
FSM   68  80  56  75 /  70  30  10   0
MLC   66  80  58  75 /  50  20  10   0
BVO   57  75  52  70 /  30  10   0   0
FYV   60  75  55  70 /  60  20   0   0
IDB   70  84  60  80 /  80  30  10   0
BYV   60  75  55  70 /  60  20   0   0
MIO   58  75  53  70 /  30  10   0   0
MKO   60  75  55  72 /  30  10   0   0
F10   60  75  55  72 /  30  10   0   0
HHW   70  84  60  80 /  80  30  10   0

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

In the hours before

Local storm report, Jun 4, 7:23 PM CDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
723 PM CDT THU JUN 04 1998

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

0705 PM    ALTUS                     AR   WIND DAMAGE
06/04/98   FRANKLIN                       THREE FOOT DIAMETER TREES
                                          BLOWN DOWN IN ALTUS.

Local storm report, Jun 4, 7:25 PM CDT, 2 hours 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
725 PM CDT THU JUN 04 1998

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

0713 PM    OZARK                     AR   1.75 INCH HAIL
06/04/98   FRANKLIN                       QUARTER TO GOLFBALL SIZE
                                          HAIL IN OZARK. REPORT FROM
                                          KHBS TV.

Local storm report, Jun 4, 8:46 PM CDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
846 PM CDT THU JUN 04 1998

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

0820 PM    2 W BOSWELL               OK   WIND DAMAGE
06/04/98   CHOCTAW                        TREES BLOWN DOWN ALONG
                                          HIGHWAY 70 JUST WEST OF
                                          BOSWELL.

Local storm report, Jun 4, 8:58 PM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
858 PM CDT THU JUN 04 1998

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

0845 PM    1 E HUGO                  OK   WIND DAMAGE
06/04/98   CHOCTAW                        LARGE TREE BLOWN DOWN AND
                                          BLOCKING ROAD JUST EAST OF
                                          HUGO.

Local storm report, Jun 4, 9:08 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
908 PM CDT THU JUN 04 1998

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

0845 PM    HUGO                      OK   WIND DAMAGE
06/04/98   CHOCTAW                        NUMEROUS TREES AND SOME
                                          POWER LINES DOWN AROUND
                                          HUGO.

Local storm report, Jun 4, 9:53 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
953 PM CDT THU JUN 04 1998

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

0945 PM    2 E CASTLE                OK   1.75 INCH HAIL
06/04/98   OKFUSKEE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 7:56 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	49 min
Jun 4, 8:16 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	59 min
Jun 4, 8:44 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	46 min
Jun 4, 9:32 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
Jun 4, 10:22 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	38 min
Jun 4, 10:45 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes	45 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; radar from the NEXRAD Level II archive.