Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 461, NWS Tulsa, OK

August 26, 1999Nowata County, Rogers County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 26, 1999, 10:38 PM CDT for Nowata County, Rogers County, Oklahoma. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Aug 26, 1999, 10:38 PM CDT (03:38 UTC)
Expired
Aug 26, 1999, 11:30 PM CDT
In force
52 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Nowata County, OK, Rogers County, OK

The radar

The Tulsa radar (KINX), 46 km from the middle of the area, began a volume at 03:42 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

Lamont, OK (KLMN), launched 00:00Z, 3.6 hours before the alert went out and 158 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, Lamont, OK at 00:00Z on 1999-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1045 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lamont, OK at 00:00Z on 1999-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1045 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
3330 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

393 
WUUS54 KTSA 270341 RRA
SVRTUL
OKC105-131-270430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1038 PM CDT THU AUG 26 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN ROGERS COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1130 PM CDT

* AT 1038 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES NORTHWEST OF WATOVA...MOVING SOUTH AT
  25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...TALALA...
OOLOGAH...FOYIL AND WATOVA

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

LAT...LON 3675 9574 3672 9583 3629 9576 3637 9547

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 Aug 26, 9:40 PM CDT, 58 minutes earlier.

Area forecast discussion, Aug 26, 9:40 PM CDT, 58 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
940 PM CDT THU AUG 26 1999

SEVERE THUNDERSTORM WATCH SET TO EXPIRE AT 10 PM.  STILL ONGOING
CONVECTION ACROSS THE AREA...MAINLY WEST OF HIGHWAY 75 AT THIS
TIME AND ALSO FROM ADAIR COUNTY INTO NORTHWEST ARKANSAS ZONES.
GENERAL WEAKENING TREND OVER THE PAST HOUR OR SO WITH THE LOSS OF
DAYTIME HEATING...BUT ISOLATED STORMS STILL MANAGING TO PULSE TO
AROUND SEVERE LIMITS IN THE ACTIVITY TO THE WEST OF HIGHWAY 75.
EXPECT THIS WILL BE THE CASE FOR A FEW MORE HOURS OR SO.  SATL AND
PROFILER NETWORK SHOWING SHORTWAVE DROPPING SOUTHWARD ACROSS EASTERN
KANSAS THROUGH THE EVENING.  THIS FEATURE WILL DROP ON SOUTH ACROSS
THE AREA THROUGH THE NIGHT WITH ENOUGH DYNAMICS TO KEEP CHANCE POPS
GOING THROUGH THE REMAINDER OF THE NIGHT.  WILL ALSO MAKE SOME
TEMP/WIND ADJUSTMENTS FOR THE OVERNIGHT HOURS BASED ON CURRENT
TRENDS. NO CHANGES TO THE LATER PERIODS.  UPDATED ZONES WILL BE
ISSUED AT 10 PM WHEN WATCH EXPIRES.

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

In the hours before

Local storm report, Aug 26, 7:56 PM CDT, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
756 PM CDT THU AUG 26 1999

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

0430 PM    8 W CLAREMORE             OK    WIND DAMAGE
08/26/99   ROGERS                          POSSIBLE TORNADO MOBILE
                                           HOME DAMAGED AND WIND
                                           DAMAGE TO ROOF OF BARN

0538 PM    LOCUST GROVE              OK    1 INCH HAIL
08/26/99   MAYES

0603 PM    LEACH                     OK    65 MPH TSTM GUST
08/26/99   DELAWARE

0644 PM    ZENA                      OK    .75 INCH HAIL
08/26/99   DELAWARE

0703 PM    FAIRFAX                   OK    .75 INCH HAIL
08/26/99   OSAGE

0703 PM    FAIRFAX                   OK    WIND DAMAGE
08/26/99   OSAGE                           TREE BLOWN DOWN
Local storm report, Aug 26, 7:56 PM CDT, 2 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
756 PM CDT THU AUG 26 1999

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

0430 PM    8 W CLAREMORE             OK    WIND DAMAGE
08/26/99   ROGERS                          POSSIBLE TORNADO MOBILE
                                           HOME DAMAGED AND WIND
                                           DAMAGE TO ROOF OF BARN

0538 PM    LOCUST GROVE              OK    1 INCH HAIL
08/26/99   MAYES

0603 PM    LEACH                     OK    65 MPH TSTM GUST
08/26/99   DELAWARE

0644 PM    ZENA                      OK    .75 INCH HAIL
08/26/99   DELAWARE

0703 PM    FAIRFAX                   OK    .75 INCH HAIL
08/26/99   OSAGE

0703 PM    FAIRFAX                   OK    WIND DAMAGE
08/26/99   OSAGE                           TREE BLOWN DOWN
Local storm report, Aug 26, 8:11 PM CDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
811 PM CDT THU AUG 26 1999

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

0740 PM    CHARLESTON                AR    WIND DAMAGE
08/26/99   FRANKLIN                        TREES REPORTED DOWN
Local storm report, Aug 26, 8:11 PM CDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
811 PM CDT THU AUG 26 1999

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

0740 PM    CHARLESTON                AR    WIND DAMAGE
08/26/99   FRANKLIN                        TREES REPORTED DOWN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 7:17 PM CDTSevere Thunderstorm WarningTSAPawnee43 min
Aug 26, 8:00 PM CDTSevere Thunderstorm WarningTSAPawnee45 min
Aug 26, 8:47 PM CDTSevere Thunderstorm WarningTSACreek43 min
Aug 26, 9:14 PM CDTSevere Thunderstorm WarningTSAPawnee46 min
Aug 26, 10:00 PM CDTSevere Thunderstorm WarningTSANowata, Washington45 min
Aug 26, 11:53 PM CDTSevere Thunderstorm WarningTSAPawnee37 min
Aug 26, 11:55 PM CDTSevere Thunderstorm WarningTSAWagoner50 min
Aug 27, 12:42 AM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee48 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1999Every severe thunderstorm warning in 1999

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.