Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 18, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 14, 1999, 6:35 PM CDT for Latimer County, Oklahoma. It was in force for 25 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
- Apr 14, 1999, 6:35 PM CDT (23:35 UTC)
- Expired
- Apr 14, 1999, 7:00 PM CDT
- In force
- 25 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Latimer County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 14, 6:44 PM CDT | Hail 1.75 | Panola, 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, 11.6 hours before the alert went out and 199 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 142336 TORTUL OKC077-150000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 635 PM CDT WED APR 14 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR EASTERN LATIMER COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 700 PM CDT * AT 635 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 7 MILES SOUTHWEST OF RED OAK. MOVING NORTHEAST AT 25 MPH...THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... RED OAK IF YOU ARE IN OR NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. MOBILE H\OMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS! TORNADOES IN HILLY OR MOUNTAINOUS TERRAIN ARE ESPECIALLY DANGEROUS - TAKE COVER NOW! YOU MAY NOT BE ABLE TO SEE OR HEAR THE TORNADO COMING.
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Apr 14, 3:58 PM CDT, 2 hours 37 minutes earlier.
Area forecast discussion, Apr 14, 3:58 PM CDT, 2 hours 37 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 358 PM CDT WED APR 14 1999 PROBLEM(S) OF THE DAY: STRONG WINDS (GUSTS > 35 MPH) WILL THE CONVECTION BE SCATTERED OR NUMEROUS? TEMPERATURES NOT MUCH TIME TO WRITE SO WILL KEEP IT SHORT AND SIMPLE. UPPER LOW VISIBLE IN VISIBLE...IR...AND WATOR VAPOR NEAR THE RED RIVER IN SOUTHWEST OKLAHOMA. THIS FEATURE TO TRACK EAST ACROSS FORECAST AREA THIS EVENING AND THEN ITS VORTICITY MAXIMUM TRACKS NORTHEAST TO SOUTHERN ILLINOIS BY 12Z THURSDAY. HOWEVER...FLY IN OINTMENT IS THAT AN UPPER LOW CONSOLIDATES BETWEEN NORTHERN AND SOUTHERN STREAM SEGMENTS OF THE JET OVER THE CENTRAL U.S. THURSDAY. THUS...MAY NOT GET OF THE CLOUDS AND RAIN AS QUICKLY AS MIGHT EXPECT. WILL CARRY RAIN INTO TOMORROW MORNING USING BEST MEAN RH'S AS GUIDANCE. WILL CARRY CLOUDS THROUGH THE DAY TOMORROW BEFORE BREAKING THEM OUT FOR TOMORROW NIGHT. BIG STORY WILL BE THE WIND THOUGH. SURFACE LOW REALLY CRANKS UP AS IT TRACKS NORTHEAST FROM CENTRAL OKLAHOMA. GIVEN GRADIENT SHOULD EASILY MEET WIND ADVISORY CRITERIA OF 20 TO 30 MPH AND GUSTY. LATER SHIFTS MAY HAVE TO UPDATE FOR TIMING AND TO MAKE THEM EVEN STRONGER. TEMPERATURES ALSO A PROBLEM. WIND AND CLOUDS SHOULD KEEP TEMPS FROM DROPPING TOO MUCH TONIGHT AND FROM RISING TOO MUCH TOMORROW. TOMORROW NIGHT WILL BE VERY INTERESTING. IF CLOUDS BREAK UP AS EXPECTED AND WIND WOULD DIE DOWN COULD HAVE A HARD FREEZE. WILL PLAY IT THAT THE WIND WILL STAY UP ENOUGH TO JUST BARELY KEEP THAT FROM HAPPENING. FCSTID = 17 TUL 44 50 35 55 / 60 30 0 0 FSM 46 53 36 55 / 60 30 0 0 MLC 46 53 36 57 / 70 20 0 0 BVO 42 48 33 53 / 60 30 0 0 FYV 44 50 32 50 / 60 30 0 0 IDB 48 57 37 60 / 60 0 0 10 BYV 44 50 32 50 / 60 30 0 0 MIO 43 50 33 52 / 60 30 0 0 MKO 44 50 35 55 / 60 30 0 0 F10 44 50 35 55 / 60 30 0 0 HHW 48 57 37 60 / 60 0 0 10 .TUL... OK...WIND ADVISORY FOR WEDNESDAY NIGHT AND THURSDAY FOR ZONES OKZ049...OKZ053>077. AR...WIND ADVISORY FOR WEDNESDAY NIGHT AND THURSDAY FOR ZONES ARZ001>002...ARZ010>011...ARZ019>020...ARZ029. ABBAS -------------------- EXPERIMENTAL OUTPUT: HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: SLIGHT CHANCE NONE NGM CONFIDENCE: 7 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 8 ON A SCALE OF 0 TO 10 AVN CONFI4DENCE: 7 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 9 ON A SCALE OF 0 TO 10
In the hours before
Special weather statement, Apr 14, 1:00 PM CDT, 5 hours 35 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-151200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT WED APR 14 1999 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE OVER SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS THIS AFTERNOON AND EVENING... .SYNOPSIS... EARLY THIS AFTERNOON A LOW PRESSURE SYSTEM WAS LOCATED NEAR THE RED RIVER IN FAR SOUTHWEST OKLAHOMA. A DRYLINE TRAILED SOUTH FROM THE LOW INTO NORTHERN TEXAS. THE LOW PRESSURE SYSTEM WILL TRACK ACROSS SOUTHERN OKLAHOMA THROUGH THIS EVENING...THEN INTO ARKANSAS EARLY TONIGHT. .DISCUSSION... A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS EVENING MAINLY ALONG AND TO THE SOUTH OF I-40. SUNSHINE HAD RETURNED TO MUCH OF SOUTHWEST AND SOUTH CENTRAL OKLAHOMA THIS AFTERNOON AS DRIER AIR WRAPPED INTO AN UPPER LEVEL STORM SYSTEM LOCATED ALONG THE RED RIVER. THE ADDED SUNSHINE WARMED SURFACE TEMPERATURES TO AROUND 70 DEGREES. THE WARMER SURFACE TEMPERATURES COMBINED WITH COLDER AIR ALOFT ASSOCIATED WITH THE UPPER LOW WILL CAUSE THE ATMOSPHERE TO BECOME INCREASINGLY UNSTABLE OVER SOUTHERN OKLAHOMA AS THE UPPER LEVEL SYSTEM DRAWS CLOSER. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THE VICINITY OF THE SURFACE LOW AND TRAILING DRYLINE AS IT MOVES EASTWARD THIS AFTERNOON AND THIS EVENING. GIVEN ENOUGH INSTABILITY A FEW OF THESE STORMS MAY BECOME SEVERE OVER SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS WITH LARGE HAIL AND STRONG GUSTY WINDS THE PRIMARY THREAT. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION THIS AFTERNOON AND THIS EVENING MAINLY IN AREAS TO ALONG AND TO THE SOUTH OF I-40.
Special weather statement, Apr 14, 1:00 PM CDT, 5 hours 35 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-151200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT WED APR 14 1999 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE OVER SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS THIS AFTERNOON AND EVENING... .SYNOPSIS... EARLY THIS AFTERNOON A LOW PRESSURE SYSTEM WAS LOCATED NEAR THE RED RIVER IN FAR SOUTHWEST OKLAHOMA. A DRYLINE TRAILED SOUTH FROM THE LOW INTO NORTHERN TEXAS. THE LOW PRESSURE SYSTEM WILL TRACK ACROSS SOUTHERN OKLAHOMA THROUGH THIS EVENING...THEN INTO ARKANSAS EARLY TONIGHT. .DISCUSSION... A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS EVENING MAINLY ALONG AND TO THE SOUTH OF I-40. SUNSHINE HAD RETURNED TO MUCH OF SOUTHWEST AND SOUTH CENTRAL OKLAHOMA THIS AFTERNOON AS DRIER AIR WRAPPED INTO AN UPPER LEVEL STORM SYSTEM LOCATED ALONG THE RED RIVER. THE ADDED SUNSHINE WARMED SURFACE TEMPERATURES TO AROUND 70 DEGREES. THE WARMER SURFACE TEMPERATURES COMBINED WITH COLDER AIR ALOFT ASSOCIATED WITH THE UPPER LOW WILL CAUSE THE ATMOSPHERE TO BECOME INCREASINGLY UNSTABLE OVER SOUTHERN OKLAHOMA AS THE UPPER LEVEL SYSTEM DRAWS CLOSER. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THE VICINITY OF THE SURFACE LOW AND TRAILING DRYLINE AS IT MOVES EASTWARD THIS AFTERNOON AND THIS EVENING. GIVEN ENOUGH INSTABILITY A FEW OF THESE STORMS MAY BECOME SEVERE OVER SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS WITH LARGE HAIL AND STRONG GUSTY WINDS THE PRIMARY THREAT. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION THIS AFTERNOON AND THIS EVENING MAINLY IN AREAS TO ALONG AND TO THE SOUTH OF I-40.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 6:16 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 29 min |
| Apr 14, 6:55 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 50 min |
| Apr 14, 6:55 PM CDT | Tornado Warning | TSA | Latimer, LeFlore | 50 min |
Nearby
Tornado Warnings in Oklahoma, 1999Every tornado warning in 1999Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.