Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 387, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 20, 1996, 11:02 PM CDT for LeFlore County, Oklahoma. It was in force for 43 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
- Oct 20, 1996, 11:02 PM CDT (04:02 UTC)
- Expired
- Oct 20, 1996, 11:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 4.0 hours before the alert went out and 248 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
- 2190 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.1
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.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 20, 8:51 PM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, Oct 20, 8:51 PM CDT, 2 hours 11 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 850 PM CDT SUN OCT 20 1996 SO FAR ONLY A FEW TSRA HV DVLPD ACRS WRN OK. NRN STRM APRD TO HV A CLASSIC SPLIT EARLIER W/WELL DEFINED LEFT AND RIGHT MOVERS. THIS FALLS IN LINE W/WND PROFILERS AND 00Z OUN SNDG WHICH SHOW JUST A LTL VEERING W/HEIGHT BUT OVERALL FAIRLY STRAIGHT LINE HODOGRAPHS. RIGHT MVG PART OF THIS SPLIT IS CRNTLY A FEW CNTYS AWAY FM FA. MEANWHILE A CPL OTHER RIGHT MVG STRMS ARE IN SW OK. 00Z SNDGS AND 12Z MDLS SHOW CAP STRGR FURTHER E AND S. SO ALTHO SW OK STRMS ARE HEADED TWDS MOIST AXIS THEY SHLD BE FACING MORE CAPPING. WOULD XCPT SRN STRMS TO WEAKEN AS THEY MV TWDS SE OK. HOWEVER 15Z MESOETA DOES SHOW A SMALL PRECIP BULLSEYE MVG ACRS SE OK INTO SW AR BY 12Z AND THUS FAR ITS SOLN SEEMS TO BE DOING A FAIR JOB HANDLING CRNT SCENERIO. WL HV TO SEE WHAT WINS OUT. BUT PREV THINKING OF CHC POPS IN SE OK LOOKS FINE. HEALTHY CAP SHOWN AT SGF ON 00Z SNDG BUT GOOD LAPSE RATES ABV CAP. AS S/W PROGRESSES EWD MID LVL TEMPS WL COOL. NOT SURE IF THIS WL BE ENOUGH TO HV SFC BASED CNVCTN IN NE ZNS BUT BELIEVE ELEVATED TSRA CAN MV/DVLP THERE LATER TNGT. SO WL LET CRNT POPS RIDE. INIT WND SHFT/SFC TROF HAS MADE IT INTO WRN OSAGE CNTY ATTM WHILE APRS THAT CDFNT STILL LAGS BEHIND IN CNTRL KS. TIMING OF THESE FEATURES BY PREV FCSTR LOOKS REASONABLE SO WL NOT MAKE ANY CHGS TO MIN TEMPS OR WNDS. 07 .TUL... OK...NONE. AR...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 9:41 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 49 min |
| Oct 20, 10:17 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 43 min |
| Oct 20, 10:30 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 15 min |
| Oct 20, 10:42 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa, Washington | 48 min |
| Oct 20, 10:57 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 18 min |
| Oct 20, 11:10 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 50 min |
| Oct 21, 12:41 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 49 min |
| Oct 21, 12:55 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 50 min |
| Oct 21, 1:21 AM CDT | Severe Thunderstorm Warning | TSA | Adair | 69 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1996Every severe thunderstorm warning in 1996
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.