Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 362, NWS Tulsa, OK

June 21, 1998Mayes County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 21, 1998, 3:02 AM CDT for Mayes County, Oklahoma. It was in force for 58 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: Jun 21, 1998, 3:02 AM CDT (08:02 UTC)
Expired: Jun 21, 1998, 4:00 AM CDT
In force: 58 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Mayes County, OK

The radar

The Tulsa radar (KINX), 33 km from the middle of the area, began a volume at 08:06 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 8.0 hours before the alert went out and 144 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: 2527 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 299 m²/s²
0-3 km storm-relative helicity: 547 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 12.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 210802 RRA
SVRTUL
OKC097-210900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
302 AM CDT SUN JUN 21 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  MAYES COUNTY IN NORTHEASTERN OKLAHOMA

* UNTIL 400 AM CDT

* AT 300 AM...NATIONAL WEATHER SERVICE RADAR DETECTED A LINE OF
  SEVERE THUNDERSTORMS FROM JUST WEST OF CLAREMORE TO CATOOSA TO
  REDBIRD...MOVING EAST-SOUTHEAST AT 35 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  PRYOR
  SALINA
  CHOUTEAU

  HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 80 MPH CAN BE
  EXPECTED IN THE WARNED AREA.

BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

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 20, 9:50 PM CDT, 5 hours 12 minutes earlier.

Area forecast discussion, Jun 20, 9:50 PM CDT, 5 hours 12 minutes before

FPUS3 KTUL 210253
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
950 PM CDT SAT JUN 20 1998

ZONES HAVE BEEN UPDATED TO ADD CHANCE POPS FOR MOST ZONES AND TO
TWEAK WINDS AND TEMPS.  COLD FRONT HAS FIRED UP OVER SE KANSAS AND
THESE STORMS IF THEY SURVIVE WILL EVENTUALLY MOVE SOUTHEASTWARD OVER
MUCH OF NE OK AND NW AR BY LATE TONIGHT.  THE STORMS WILL LIKELY
DEVELOP INTO A COMPLEX WHICH WOULD BRING A DECENT CHANCE OF SEVERE
WEATHER TO THE AREA IN THE FORM PRIMARILY OF DAMAGING STRAIGHT-LINE
WINDS.  THE FRONT AND POSSIBLE PRECIP WILL PLAY HAVOC WITH LOW TEMPS.

...19...

.TUL...
OK...HEAT ADVISORY FOR TONIGHT THROUGH SUNDAY NIGHT FOR ZONES
OKZ049...OKZ053>056...OKZ059>061...OKZ064>067...OKZ070>077.

AR...HEAT ADVISORY FOR TONIGHT THROUGH SUNDAY NIGHT FOR ZONES
ARZ019>020...ARZ029.

In the hours before

Local storm report, Jun 20, 9:57 PM CDT, 5 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
957 PM CDT SAT JUN 20 1998

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

0855 PM    JENNINGS                  OK   NON TSTM WINDS
06/20/98   PAWNEE                         A DRY MICROBURST OCCURRED
                                          FROM THE REMNANT ANVIL OF
                                          A DISSIPATED THUNDERSTORM.
                                          SEVERAL LARGE TREE LIMBS
                                          WERE BLOWN DOWN.

Local storm report, Jun 20, 10:59 PM CDT, 4 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1059 PM CDT SAT JUN 20 1998

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

1035 PM    BIXBY                     OK   NON TSTM WINDS
06/20/98   TULSA                          A MEASURED WIND GUST TO 61
                                          MPH OCCURRED IN BIXBY.
                                          THIS WIND WAS A DRY
                                          MICROBURST AND RESULTED IN
                                          A 10 DEGREE TEMPERATURE
                                          JUMP TO 95 DEGREES

Special weather statement, Jun 20, 11:21 PM CDT, 3 hours 41 minutes before

OKZ054-059-060-064-066-067-070-210445-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1121 PM CDT SAT JUN 20 1998

A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 1215 AM FOR OSAGE...
PAWNEE...CREEK AND TULSA COUNTIES AND UNTIL 100 AM FOR OKMULGEE...
MUSKOGEE AND WAGONER COUNTIES.

HIGH LEVEL MOISTURE...ASSOCIATED WITH THE REMNANTS OF EARLIER
THUNDERSTORMS...IS CONTRIBUTING TO CONDITIONS FAVORABLE FOR HEAT
BURSTS.  THESE HEAT BURSTS ARE OCCURRING RANDOMLY ACROSS THE
WARNING AREA AND AFFECTING SMALL AREAS...BUT WHEN THEY OCCUR WINDS
GUST TO AROUND 60 MPH AND THE TEMPERATURE JUMPS WELL INTO THE 90S
AND REACHES NEAR 100 DEGREES AT TIMES.

BETWEEN 1020 AND 1040 PM A HEAT BURST OCCURRED IN SOUTH TULSA COUNTY
WITH WINDS TO 60 MPH REPORTED IN BIXBY...POWER LINES REPORTED DOWN
AT 91ST AND GARNETT IN SOUTHEAST TULSA AND TEMPEATURES NEAR 100
DEGREES REPORTED AT A NUMBER OF SPOTS IN SOUTH TULSA.

CONDITIONS WILL REMAIN FAVORABLE FOR HEAT BURSTS IN THE WARNING
AREAS.  THESE WINDS WILL STRIKE SUDDENLY AND WITHOUT RAIN OR
LIGHTNING.  DAMAGE TO TREES AND POWER LINES MAY OCCUR.

THE GREATEST RISK FOR ADDITIONAL HEAR BURSTS APPEARS TO BE FROM
AROUND BROKEN ARROW TO NEAR COWETA AND HASKELL.

STAY TUNED TO THIS STATION FOR FURTHER INFORMATION FROM THE NATIONAL
WEATHER SERVICE.

Local storm report, Jun 21, 3:01 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
301 AM CDT SUN JUN 21 1998

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

0145 AM    WYNONA                    OK   58 MPH TSTM GUST
06/21/98   OSAGE                          MEASURED AT OKLAHOMA
                                          MESONET SITE 2 MILES SOUTH
                                          OF WYNONA

0153 AM    HOMINY                    OK   80 MPH TSTM GUST
06/21/98   OSAGE                          TREES ALSO BLOWN DOWN

0155 AM    JENNINGS                  OK   75 MPH TSTM GUST
06/21/98   PAWNEE                         TREE LIMBS ALSO BLOWN DOWN

0156 AM    JENNINGS                  OK   96 MPH TSTM GUST
06/21/98   PAWNEE

0200 AM    HOMINY                    OK   1.75 INCH HAIL
06/21/98   OSAGE

0232 AM    SAND SPGS                 OK   70 MPH TSTM GUST
06/21/98   TULSA                          POWER LINES ALSO BLOWN
                                          DOWN.

0232 AM    TULSA                     OK   WIND DAMAGE
06/21/98   TULSA                          TRANSFORMERS BLOWING UP IN
                                          NORTH TULSA

0240 AM    TULSA                     OK   65 MPH TSTM GUST
06/21/98   TULSA                          IN EAST TULSA

0240 AM    TULSA                     OK   95 MPH TSTM GUST
06/21/98   TULSA                          NEAR US HWY 75 AND APACHE

0242 AM    TULSA                     OK   90 MPH TSTM GUST
06/21/98   TULSA                          CHANNEL 6 REPORTED 85 TO
                                          90 MPH WINDS DOWNTOWN

0245 AM    BROKEN ARROW              OK   65 MPH TSTM GUST
                                          ALONG TULSA AND WAGONER
                                          COUNTY LINES NEAR 91ST
                                          STREET

Local storm report, Jun 21, 3:01 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
301 AM CDT SUN JUN 21 1998

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

0145 AM    WYNONA                    OK   58 MPH TSTM GUST
06/21/98   OSAGE                          MEASURED AT OKLAHOMA
                                          MESONET SITE 2 MILES SOUTH
                                          OF WYNONA

0153 AM    HOMINY                    OK   80 MPH TSTM GUST
06/21/98   OSAGE                          TREES ALSO BLOWN DOWN

0155 AM    JENNINGS                  OK   75 MPH TSTM GUST
06/21/98   PAWNEE                         TREE LIMBS ALSO BLOWN DOWN

0156 AM    JENNINGS                  OK   96 MPH TSTM GUST
06/21/98   PAWNEE

0200 AM    HOMINY                    OK   1.75 INCH HAIL
06/21/98   OSAGE

0232 AM    SAND SPGS                 OK   70 MPH TSTM GUST
06/21/98   TULSA                          POWER LINES ALSO BLOWN
                                          DOWN.

0232 AM    TULSA                     OK   WIND DAMAGE
06/21/98   TULSA                          TRANSFORMERS BLOWING UP IN
                                          NORTH TULSA

0240 AM    TULSA                     OK   65 MPH TSTM GUST
06/21/98   TULSA                          IN EAST TULSA

0240 AM    TULSA                     OK   95 MPH TSTM GUST
06/21/98   TULSA                          NEAR US HWY 75 AND APACHE

0242 AM    TULSA                     OK   90 MPH TSTM GUST
06/21/98   TULSA                          CHANNEL 6 REPORTED 85 TO
                                          90 MPH WINDS DOWNTOWN

0245 AM    BROKEN ARROW              OK   65 MPH TSTM GUST
                                          ALONG TULSA AND WAGONER
                                          COUNTY LINES NEAR 91ST
                                          STREET

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 9:28 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	62 min
Jun 21, 12:24 AM CDT	Severe Thunderstorm Warning	TSA	Osage	66 min
Jun 21, 1:02 AM CDT	Flash Flood Warning	TSA	Osage	3 hr
Jun 21, 1:23 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	52 min
Jun 21, 1:46 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	59 min
Jun 21, 2:09 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	36 min
Jun 21, 2:17 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	43 min
Jun 21, 2:23 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	37 min
Jun 21, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	60 min
Jun 21, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	60 min
Jun 21, 2:30 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	60 min
Jun 21, 2:53 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	37 min
Jun 21, 3:15 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, McIntosh, Muskogee	60 min
Jun 21, 3:26 AM CDT	Severe Thunderstorm Warning	TSA	Wagoner	34 min
Jun 21, 3:50 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	40 min
Jun 21, 4:10 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee	50 min
Jun 21, 4:20 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.