Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 87, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 30, 1996, 1:35 PM CST for Creek County, Oklahoma. It was in force for 40 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
- Mar 30, 1996, 1:35 PM CST (19:35 UTC)
- Expired
- Mar 30, 1996, 2:15 PM CST
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Creek County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 30, 2:05 PM CST | Hail 0.75 | Bristow, 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.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 7.6 hours before the alert went out and 120 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
- 303 J/kg
- Mixed-layer CIN
- -198 J/kg
- Mixed-layer LCL
- 580 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 248 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 301937 RRA SVRTUL OKC037-302015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 135 PM CST SAT MAR 30 1996 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...CREEK COUNTY AT 134 PM RADAR INDICATED A DEVELOPING SEVERE THUNDERSTORM OVER DEPEW. IN ADDITION OTHER STORMS WERE DEVELOPING FROM NEAR DRUMRIGHT TO SOUTH OF BRISTOW AND THESE STORMS COULD ALSO BECOME SEVERE. THE STORMS WERE MOVING NORTHEAST AT 25 MPH. HAYBURN LAKE IS IN THE PATH OF THIS STORM. HAIL TO THE SIZE OF _____ AND WIND GUSTS TO ___ MPH CAN BE EXPECTED IN THE WARNED AREA. DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE OR HAND HELD ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY. MOTORISTS SHOULD BE ALERT FOR WATER ON ROADWAYS AND NEVER DRIVE ONTO A FLOODED ROAD.
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 Mar 30, 10:01 AM CST, 3 hours 34 minutes earlier.
Area forecast discussion, Mar 30, 10:01 AM CST, 3 hours 34 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1000 AM CST SAT MAR 30 1996 12Z UPR AIR ANALYSES SHOW STRG NRLY VERTICALLY STACKED LO NR GAG. 15Z MESONET SHOWS SFC LO BTWN GAG AND END W/DRYLINE XTNDG SWD ACRS WRN OK. SNDGS SHOW CAP REMAINS ACRS SRN PLAINS ALTHO LAPSE RATES ARE STEEP AND WND FIELDS STRG. SOME RW/TRW HV FORMED IN WRN OK UNDERNEATH UPR LO WHILE OTHER RW AHEAD OF SYS HV MOVED OUT OF NRN ZNS INTO KS/MO. LOTS OF CLR SKIES ACRS MUCH OF WRN AND CNTRL OK WL ALLOW FOR GOOD HEATING DURG THE DAY AND FURTHER DESTABILIZATION. 12Z ETA/NGM/RUC IN GOOD AGREEMENT IN TRACKING UPR LO TO NR TUL BY 00Z. XPCT RW/TRW TO FORM AHEAD OF AND BENEATH THIS SYS. HOWEVER AM NOT CONVINCED THAT CNVCTN WL BE BASED IN BNDRY LYR. BEST CHC FOR THAT WL PROB BE IN SRN ZNS. NEVERTHELESS SVR TRW PSBL W/LO TOPPED/LO VIL HAILERS LOOKING MOST LIKELY. CRNT ZNS HV SITN PRETTY WELL IN HAND AND SO ONLY MINOR ADJS ARE XPCTD. 07 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Mar 30, 1:00 PM CST, 35 minutes before
ARZ001-002-010-011-019-029-OKZ054>077-311200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST SAT MAR 30 1996 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF EASTERN OKLAHOMA AND A SMALL PART OF WEST CENTRAL ARKANSAS UNTIL 7 PM. A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND EVENING. A STRONG UPPER LEVEL SYSTEM WAS MOVING ACROSS CENTRAL OKLAHOMA EARLY THIS AFTERNOON. AT THE SURFACE...LOW PRESSURE WAS CENTERED JUST NORTHEAST OF OKLAHOMA CITY AT 1 PM. THE SURFACE LOW WILL TRACK EAST SOUTHEAST ACROSS SOUTHEAST OKLAHOMA THIS AFTERNOON AND THE UPPER LEVEL SYSTEM WILL MOVE EAST INTO NORTHEAST OKLAHOMA. SUBSTANTIAL MID LEVEL COOLING WILL OCCUR ACROSS THE AREA THIS AFTERNOON AS THE UPPER LEVEL SYSTEM MOVES INTO THE AREA. THIS WILL ALLOW THE CAP WHICH HAS BEEN IN PLACE OVER THE AREA THIS MORNING TO BREAK AND ALLOW THUNDERSTORMS TO DEVELOP. LOW LEVEL MOISTURE WILL ALSO CONTINUE TO INCREASE THIS AFTERNOON AND THIS WILL FURTHER DESTABILIZE THE ATMOSPHERE AND ALLOW SOME OF THE STORMS TO BECOME SEVERE. THE MAIN SEVERE WEATHER THREAT IS EXPECTED TO BE LARGE HAIL. THE COLDER AIR ALOFT MOVING INTO THE AREA WILL CAUSE THE STORMS TO BE EFFICIENT HAIL PRODUCERS. CONDITIONS DO NOT APPEAR FAVORABLE AT THIS TIME FOR DAMAGING WINDS AND TORNADOES AS THE BETTER WIND PROFILES FOR THIS TYPE OF ACTIVITY WILL BE SOUTH AND EAST OF THE AREA. THE SEVERE WEATHER THREAT SHOULD END BY 10 PM. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE SEVERE THUNDERSTORM WATCH AREA SHOULD BE ACTIVATING NOW. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE REST OF THE AREA SHOULD BE PREPARED FOR POSSIBLE ACTIVATION LATE THIS AFTERNOON AND EVENING.
Special weather statement, Mar 30, 1:11 PM CST, 24 minutes before
ARZ001-002-010-011-019-029-OKZ054>077-311200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST SAT MAR 30 1996 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF EASTERN OKLAHOMA AND A SMALL PART OF WEST CENTRAL ARKANSAS UNTIL 7 PM. A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND EVENING. A STRONG UPPER LEVEL SYSTEM WAS MOVING ACROSS CENTRAL OKLAHOMA EARLY THIS AFTERNOON. AT THE SURFACE...LOW PRESSURE WAS CENTERED JUST NORTHEAST OF OKLAHOMA CITY AT 1 PM. THE SURFACE LOW WILL TRACK EAST SOUTHEAST ACROSS SOUTHEAST OKLAHOMA THIS AFTERNOON AND THE UPPER LEVEL SYSTEM WILL MOVE EAST INTO NORTHEAST OKLAHOMA. SUBSTANTIAL MID LEVEL COOLING WILL OCCUR ACROSS THE AREA THIS AFTERNOON AS THE UPPER LEVEL SYSTEM MOVES INTO THE AREA. THIS WILL ALLOW THE CAP WHICH HAS BEEN IN PLACE OVER THE AREA THIS MORNING TO BREAK AND ALLOW THUNDERSTORMS TO DEVELOP. LOW LEVEL MOISTURE WILL ALSO CONTINUE TO INCREASE THIS AFTERNOON AND THIS WILL FURTHER DESTABILIZE THE ATMOSPHERE AND ALLOW SOME OF THE STORMS TO BECOME SEVERE. THE MAIN SEVERE WEATHER THREAT IS EXPECTED TO BE LARGE HAIL. THE COLDER AIR ALOFT MOVING INTO THE AREA WILL CAUSE THE STORMS TO BE EFFICIENT HAIL PRODUCERS. CONDITIONS DO NOT APPEAR FAVORABLE AT THIS TIME FOR DAMAGING WINDS AND TORNADOES AS THE BETTER WIND PROFILES FOR THIS TYPE OF ACTIVITY WILL BE SOUTH AND EAST OF THE AREA. THE SEVERE WEATHER THREAT SHOULD END BY 10 PM. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE SEVERE THUNDERSTORM WATCH AREA SHOULD BE ACTIVATING NOW. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN THE REST OF THE AREA SHOULD BE PREPARED FOR POSSIBLE ACTIVATION LATE THIS AFTERNOON AND EVENING.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 2:12 PM CST | Severe Thunderstorm Warning | TSA | Creek | 48 min |
| Mar 30, 2:35 PM CST | Severe Thunderstorm Warning | TSA | Okmulgee | 40 min |
| Mar 30, 2:56 PM CST | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 49 min |
| Mar 30, 4:21 PM CST | Severe Thunderstorm Warning | TSA | Cherokee | 39 min |
| Mar 30, 4:41 PM CST | Severe Thunderstorm Warning | TSA | Delaware | 49 min |
| Mar 30, 5:24 PM CST | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee | 51 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.