Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 102, NWS Tulsa, OK

August 2, 1986LeFlore County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 2, 1986, 1:42 AM CDT for LeFlore County, Sequoyah County, Oklahoma. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1986, 1:42 AM CDT (06:42 UTC)
Expired
Aug 2, 1986, 2:40 AM CDT
In force
58 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties LeFlore County, OK, Sequoyah County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 6.7 hours before the alert went out and 207 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 1986-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 542 joules per kilogram.LCLLFCEL10008507005003002001001 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, Springfield, MO at 00:00Z on 1986-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 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
542 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
2282 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
130 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, Aug 1, 8:01 PM CDT, 5 hours 41 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
800  PM CDT FRI AUG 1 1986

TIME/CDT COUNTY      EVENT  (CD=CIVIL DEFENSE  OHP=OK HIGHWAY PAT'L)
610  PM  TULSA       3 INCHE HAIL REPORTED BY SEVERE WEATHER SPOTTER
                     ON EAST ADMIRAL AVE  IN SOUTHEAST TULSA, OK

615  PM  WAGONER     BASE BALL SIZE REPORTED JUST EAST NORTHEAST
                     OF BROKEN ARROW, OKLA. CAR WINDOWS BROKEN.
                     REPORTED BY TULSA FSS
Special weather statement, Aug 2, 12:04 AM CDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1150 PM CDT FRI AUG 1 1986

AT 1155 PM CDT TULSA WEATHER RADAR INDICATED HEAVY TO VERY HEAVY
THUNDERSTORMS MOVING OVER CREEK AND TULSA COUNTIES.`
GUSTY WINDS 40 TO 50 MPH, VERY HEAVY RAIN AND POSSIBLE HAIL
CAN BE EXPECTED WITH THESE THUNDERSTORMS AS THEY MOVE SOUTHEAST
AT 40 MPH OVER NORTHEAST OKLAHOMA DURING THE NEXT 2 T0 3 HOURS.

 .
Local storm report, Aug 2, 1:42 AM CDT, 0 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
130  AM CDT SAT AUG 2 1986

TIME/CDT COUNTY      EVENT  (CD=CIVIL DEFENSE  OHP=OK HIGHWAY PAT'L)
1055 PM  PAWNEE      WIND GUST TO 60 MPH JUST SOUTH OF CLEVELAND, OK
                     SOME POWER LINES DOWN.    CLEVELAND PD

1130 PM  CREEK       HIGH WINDS WITH SEVERAL TREES DOWN IN
                     BRISTOW, OK.  BRISTOW PD

                     BETWEEN 1030 AND 1156 PM THERE WERE SEVERAL
                     REPORTS OF GUSTY WINDS 30 TO 50 MPH, SMALL HAIL
                     AND DAMAGE DUE TO LIGHTING OVER SOUTHERN OSAGE,
                     PAWNEE, CREEK, AND TULSA COUNTIES.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 10:36 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee54 min
Aug 1, 10:57 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa63 min
Aug 2, 1:42 AM CDTSevere Thunderstorm WarningTSABenton, Washington58 min
Aug 2, 2:07 AM CDTSevere Thunderstorm WarningTSACrawford, Madison58 min
Aug 2, 2:07 AM CDTSevere Thunderstorm WarningTSASebastian58 min
Aug 2, 2:40 AM CDTSevere Thunderstorm WarningTSALogan, Scott60 min
Aug 2, 2:40 AM CDTSevere Thunderstorm WarningTSAFranklin60 min
Aug 2, 3:02 AM CDTSevere Thunderstorm WarningTSAPolk58 min
Aug 2, 3:02 AM CDTSevere Thunderstorm WarningTSAJohnson58 min
Aug 2, 3:42 AM CDTSevere Thunderstorm WarningTSALogan, Polk, Scott58 min
Aug 2, 3:42 AM CDTSevere Thunderstorm WarningTSAFranklin, Johnson58 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1986Every severe thunderstorm warning in 1986

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.