Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 327, NWS Tulsa, OK

June 18, 1998Cherokee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 18, 1998, 7:11 PM CDT for Cherokee County, Oklahoma. It was in force for 64 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 18, 1998, 7:11 PM CDT (00:11 UTC)
Expired
Jun 18, 1998, 8:15 PM CDT
In force
64 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Cherokee County, OK

The radar

The Tulsa radar (KINX), 59 km from the middle of the area, began a volume at 00:11 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.

IssuedProductOfficeLasted
Jun 18, 4:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.2 hours before the alert went out and 154 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3542 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3542 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1049 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
2.1
Supercell composite
12.4

Open this sounding in Storm Lab

The text

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

532 
WUUS54 KTSA 190011 RRA
SVRTUL
OKC021-190115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
711 PM CDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 815 PM CDT

* AT AT 708 PM...NATIONAL WEATHER SERVICE RADAR DETECTED A SEVERE
  THUNDERSTORM 1 MILE WEST OF FORT GIBSON DAM OR 10 MILES SOUTHWEST
  OF HULBERT...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...
  PETTIT
  LAKE TENKILLER
  PARK HILL
  COOKSON

  HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 70 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 18, 4:10 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, Jun 18, 4:10 PM CDT, 3 hours 1 minute before
FPUS3 KTUL 182111
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
410 PM CDT THU JUN 18 1998

PROBLEM(S) OF THE DAY:
POPS
WILL THERE BE SEVERE CONVECTION?
WILL THE CONVECTION BE SCATTERED OR NUMEROUS?

CONVECTION STARTING TO FIRE ACROSS E OK ALONG SFC FRONT...AND WOULD
EXPECT FURTHUR DEVELOPMENT IN SERN OK ZNS. SOME OF THE ACTIVITY
COULD BECOME SVR GIVEN INSTABILITY AND COOLING MID LEVEL TEMPS.
MODELS PROG FRONT TO GET HUNG UP ACROSS NW AR EXTENDING THROUGH SE
OK. MODELS SUGGEST IT WASHING OUT BY LATE AFTERNOON TOMORROW. AFTER
ACTIVITY DIMINISHES OVERNIGHT TONIGHT...WILL GO WITH A SLIGHT CHANCE
POPS ACROSS NRN ZNS TOMORROW NIGHT...ETA DUMPS SOME PRECIP IN
RESPONSE TO A WK S/W BRUSHING THE AREA. OTHERWISE SOUTHERLY FLOW
WILL DOMINATE LTR PDS. H5 RIDGE BUILDING BACK INTO THE FA WITH
TIME...THIS AND WARMING H7 TEMPS LOOKS LIKE DRY HOT WX FOR WEEKEND
AND INTO NEXT WEEK.

WILL KEEP EXTENDED DRY WITH THE NRN ZNS GETTING A SLIGHT MENTION SUN
NITE AND EARLY MON MORN AS MODELS HINT AT SOME ELEVATED
CONVECTION(LIKE WHAT WAS SEEN THIS MORNING).

FCSTID = 23
TUL   71  94  74  94 /  30  10  20   0
FSM   72  94  72  95 /  40  10   0   0
MLC   72  94  73  94 /  40  10   0   0
BVO   67  94  72  94 /  30  10  20   0
FYV   67  92  69  91 /  40  10  20   0
IDB   73  94  72  95 /  30  10   0   0
BYV   67  92  69  91 /  40  10   0   0
MIO   70  94  73  93 /  40  10  20   0
MKO   72  94  73  94 /  40  10   0   0
F10   71  94  74  94 /  40  10   0   0
HHW   73  94  72  95 /  40  10   0   0

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

---------------------
EXPERIMENTAL OUTPUT:

GENERAL WEATHER EXPECTED NEXT 24 HOURS: CONVECTIVE PRECIP
HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: CHANCE SEVERE THUNDERSTORMS
NGM CONFIDENCE:  3 ON A SCALE OF 0 TO 10
ETA CONFIDENCE:  6 ON A SCALE OF 0 TO 10
AVN CONFIDENCE:  0 ON A SCALE OF 0 TO 10
FCST CONFIDENCE: 6 ON A SCALE OF 0 TO 10

In the hours before

Local storm report, Jun 18, 5:33 PM CDT, 1 hour 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
533 PM CDT THU JUN 18 1998

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

0955 PM    5 N CLAYTON               OK   1 INCH HAIL
06/18/98   PUSHMATAHA

1030 PM    1 W WHITESBORO            OK   WIND DAMAGE
06/18/98   LE FLORE                       TREE LIMB DOWN ACROSS ROAD
                                          AND TREES KNOCKED DOWN
                                          JUST WEST OF WHITESBORO.
Local storm report, Jun 18, 5:43 PM CDT, 1 hour 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
543 PM CDT THU JUN 18 1998

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

0955 PM    STIGLER                   OK   1.75 INCH HAIL
06/18/98   HASKELL

0955 PM    STIGLER                   OK   60 MPH TSTM GUST
06/18/98   HASKELL                        LARGE TREE LIMBS KNOCKED
                                          DOWN.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:15 PM CDTTornado WarningTSAMuskogee, Wagoner30 min
Jun 18, 7:23 PM CDTSevere Thunderstorm WarningTSAOttawa37 min
Jun 18, 7:33 PM CDTTornado WarningTSACherokee42 min
Jun 18, 7:36 PM CDTTornado WarningTSAMcIntosh, Okmulgee39 min
Jun 18, 7:44 PM CDTSevere Thunderstorm WarningTSAMuskogee61 min
Jun 18, 7:49 PM CDTSevere Thunderstorm WarningTSAPittsburg56 min
Jun 18, 7:54 PM CDTSevere Thunderstorm WarningTSAOkfuskee51 min
Jun 18, 8:14 PM CDTTornado WarningTSAMcIntosh46 min
Jun 18, 8:19 PM CDTSevere Thunderstorm WarningTSALatimer56 min
Jun 18, 8:40 PM CDTTornado WarningTSAHaskell, Pittsburg50 min
Jun 18, 8:53 PM CDTTornado WarningTSALatimer37 min
Jun 18, 9:05 PM CDTSevere Thunderstorm WarningTSAHaskell, Pittsburg55 min
Jun 18, 9:08 PM CDTSevere Thunderstorm WarningTSASequoyah37 min
Jun 18, 9:12 PM CDTSevere Thunderstorm WarningTSALeFlore, Pushmataha63 min
Jun 18, 9:31 PM CDTTornado WarningTSALatimer44 min
Jun 18, 9:34 PM CDTFlash Flood WarningTSALatimer2 hr
Jun 18, 9:42 PM CDTTornado WarningTSASequoyah48 min
Jun 18, 10:07 PM CDTTornado WarningTSALeFlore38 min
Jun 18, 10:14 PM CDTSevere Thunderstorm WarningTSAPushmataha61 min
Jun 18, 10:20 PM CDTSevere Thunderstorm WarningTSAPittsburg40 min
Jun 18, 10:22 PM CDTSevere Thunderstorm WarningTSALatimer38 min
Jun 18, 10:25 PM CDTTornado WarningTSAPittsburg50 min
Jun 18, 10:56 PM CDTTornado WarningTSALatimer49 min
Jun 18, 11:17 PM CDTSevere Thunderstorm WarningTSAPittsburg43 min
Jun 18, 11:23 PM CDTSevere Thunderstorm WarningTSAOkmulgee37 min
Jun 18, 11:24 PM CDTTornado WarningTSAPushmataha51 min
Jun 18, 11:26 PM CDTSevere Thunderstorm WarningTSAMcIntosh49 min
Jun 18, 11:41 PM CDTSevere Thunderstorm WarningTSALeFlore64 min
Jun 18, 11:50 PM CDTFlash Flood WarningTSALatimer100 min
Jun 18, 11:55 PM CDTSevere Thunderstorm WarningTSALatimer35 min
Jun 19, 12:07 AM CDTSevere Thunderstorm WarningTSAHaskell53 min
Jun 19, 12:44 AM CDTSevere Thunderstorm WarningTSALeFlore46 min
Jun 19, 1:06 AM CDTSevere Thunderstorm WarningTSAHaskell54 min
Jun 19, 1:29 AM CDTSevere Thunderstorm WarningTSALatimer, Pittsburg61 min
Jun 19, 1:59 AM CDTSevere Thunderstorm WarningTSAHaskell31 min
Jun 19, 2:11 AM CDTSevere Thunderstorm WarningTSALeFlore64 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1998Every 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.