Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 86, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 26, 1987, 6:14 PM CDT for Okfuskee County, Oklahoma. It was in force for 61 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
- Aug 26, 1987, 6:14 PM CDT (23:14 UTC)
- Expired
- Aug 26, 1987, 7:15 PM CDT
- In force
- 61 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Okfuskee County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 26, 6:26 PM CDT | Hail 1.75 | Okfuskee, OK |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Ok Cty/Will Rgrs, OK (KOKC), launched 12:00Z, 11.2 hours before the alert went out and 116 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.
- Mixed-layer CAPE
- 1119 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1320 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KTUL 262314
SVRTUL
OKC107-270015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
614 PM CDT WED AUG 26 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL OKLAHOMA
...OKFUSKEE
AT 610 PM CDT TULSA RADAR INDICATED A SEVERE THUNDERSTORM
FIVE MILES SOUTHWEST OF OKEMAH OKLAHOMA MOVING TO THE NORTH
NORTHEAST AT 25 MPH.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.
K EEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.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
Special weather statement, Aug 26, 2:07 PM CDT, 4 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA, OK 207 PM CDT WED AUG 26 1987 ...INTENSE THUNDERSTORMS ARE FORMING OVER NORTHEASTERN OKLAHOMA... THUNDERSTORMS ARE FORMING OVER NORTHEASTERN OKLAHOMA AHEAD OF A COLD FRONT THAT IS CURRENTLY IN THE NORTH AND CENTRAL SECTIONS OF THE STATE. AT 2 PM THE TULSA WEATHER RADAR INDICATED AN INTENSE THUNDERSTORM 5 MILES EAST OF CLAREMORE...NEAR THE ROGERS AND MAYES COUNTY LINE. THIS STORM WAS MOVING TO THE NORTHEAST AT 25 MPH. PERSONS IN THE PATH OF THIS STORM CAN EXPECT WINDS TO 50 MILES AN HOUR ...HEAVY RAINS...AND SMALL HAIL. YOU SHOULD TAKE COVER IF THREATENING WEATHER APPROACHES AND STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST INFORMATION. MT
Special weather statement, Aug 26, 3:13 PM CDT, 3 hours 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA, OK 306 PM CDT WED AUG 26 1987 ...THUNDERSTORMS DECREASE IN INTENSITY OVER NORTHEASTERN OKLAHOMA... THE INTENSE THUNDERSTORMS THAT WERE OVER ROGERS AND MAYES COUNTIES HAVE DECREASED IN INTENSITY IN THE PAST HALF HOUR. STRONG THUNDERSTORMS REMAIN OVER MUCH OF NORTHEASTERN OKLAHOMA...AND ARE LIKELY FOR SEVERAL MORE HOURS UNTIL A COLD FRONT CLEARS THE TULSA METRO AREA SOMETIME AFTER 7 PM. REPORTS OF VERY HEAVY RAINS AND SMALL HAIL HAVE BEEN RECEIVED FROM THE CLAREMORE POLICE DEPARTMENT...BUT SO FAR NO SEVERE WEATHER HAS BEEN REPORTED. WITH THE HEAVY RAINS...SOME MINOR STREET FLOODING IS POSSIBLE IN LOW LYING AREAS. MOTORISTS IN ROGERSN AND MAYES COUNTIES SHOULD BE ALERT TO THE POSSIBILITY OF STANDING WATER AND USE CAUTION UNTIL THESE THUNDERSTORMS PASS. STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST UPDATES. MT
Local storm report, Aug 26, 5:08 PM CDT, 1 hour 6 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
506 PM CDT WED AUG 26 1987
TIME/CST COUNTY EVENT (CD=CIVIL DEFENSE OHP=OK HIGHWAY PAT'L)
4 30 PM CHEROKEE CD DIRECTOR IN TAHLEQUAH REPORTS WINDS TO 60
MPH AND GOLF BALL SIZE HAIL IN HULBERT.The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 4:26 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 49 min |
| Aug 26, 4:46 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa, Wagoner | 54 min |
| Aug 26, 5:27 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 63 min |
| Aug 26, 5:32 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 58 min |
| Aug 26, 6:38 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 42 min |
| Aug 26, 6:43 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 47 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1987Every severe thunderstorm warning in 1987
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.