Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 6, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Mar 5, 1999, 3:51 PM CST for Sequoyah County, Oklahoma; Crawford County, Arkansas. It was in force for 39 min. 4 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Mar 5, 1999, 3:51 PM CST (21:51 UTC)
- Expired
- Mar 5, 1999, 4:30 PM CST
- In force
- 39 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Crawford County, AR, Sequoyah County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 5, 4:00 PM CST | Hail 0.75 | Liberty, OK | |
| Mar 5, 4:06 PM CST | Hail 1 | Uniontown, AR | |
| Mar 5, 4:08 PM CST | Hail 1 | Cedarville, AR | There was a report of quarter-sized hail in Cedarville, and there was another report of quarter-sized hail 2 miles south of Cedarville. |
| Mar 5, 4:28 PM CST | Thunderstorm Wind | Rudy, AR | A home just north of Rudy near the old 81 loop had its roof lifted off. |
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
Springfield, MO (KSGF), launched 12:00Z, 9.9 hours before the alert went out and 165 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
- 1088 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 456 m²/s²
- 0-3 km storm-relative helicity
- 408 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS54 KTSA 052153 RRA TORTUL ARC033-OKC135-052230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 351 PM CST FRI MAR 5 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR EASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA CRAWFORD COUNTY IN NORTHWEST ARKANSAS * UNTIL 430 PM CST * AT 351 PM CST...RADAR INDICATED A DEVELOPING TORNADO 11 MILES SOUTHWEST OF SHORT. THIS DANGEROUS STORM IS MOVING EAST AT 25 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... RUDY... FIGURE FIVE...CEDARVILLE...ALMA AND SHORT IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE NOW LAT...LON 3554 9473 3540 9467 3550 9418 3569 9426
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 Mar 5, 2:00 PM CST, 1 hour 51 minutes earlier.
Area forecast discussion, Mar 5, 2:00 PM CST, 1 hour 51 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION ...UPDATED... NATIONAL WEATHER SERVICE TULSA OK 200 PM CST FRI MAR 5 1999 CONVECTION GETTING STARTED ONE OR TWO HOURS EARLIER THAN PREVIOUSLY EXPECTED. JUST UPDATED TO ADD POPS A LITTLE FURTHER WEST THAN PREVIOUS FORECAST. NO OTHER CHANGES UNTIL AFTN PKG IN TWO HOURS. 22 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Mar 5, 1:00 PM CST, 2 hours 51 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-061200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST FRI MAR 5 1999 SEVERE WEATHER WILL BE POSSIBLE WILL BE POSSIBLE LATE THIS AFTERNOON AND THIS EVENING IN NORTHWEST ARKANSAS AND PARTS OF EXTREME EASTERN OKLAHOMA. THE THREAT WILL BE PRIMARILY EAST OF US-69...EAST AND NORTH OF A LINE FROM MIAMI TO MCALESTER TO TALIHINA. PEOPLE IN THESE AREAS SHOULD MONITOR THE LATEST WEATHER CONDITIONS AND LISTEN FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE. .SYNOPSIS... AN AREA OF LOW PRESSURE AT THE SURFACE WAS LOCATED NEAR BARTLESVILLE OKLAHOMA EARLY THIS AFTERNOON. A COLD FRONT AND DRY LINE EXTENDED SOUTHWARD FROM THE LOW PRESSURE INTO SOUTHCENTRAL OKLAHOMA. THIS LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE EAST THIS AFTERNOON...REACHING SOUTHWEST MISSOURI AND NORTHWEST ARKANSAS BY SUNSET. SEVERE THUNDERSTORMS MAY DEVELOP ALONG AND AHEAD OF THE LOW PRESSURE AREA LATE THIS AFTERNOON. .DISCUSSION... ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE LATE THIS AFTERNOON AND THIS EVENING EAST OF US-69. A CAPPING LAYER OF RELATIVELY WARM AIR IN THE MID LEVELS OF THE ATMOSPHERE HAS PROHIBITED THE DEVELOPMENT OF THUNDERSTORMS TODAY. THIS CAP WILL CONTINUE TO PERSIST...BUT IS EXPECTED TO WEAKEN LATE THIS AFTERNOON AND THIS EVENING MAINLY NORTH OF I-40. THE ATMOSPHERE AHEAD OF THE COLD FRONT AND DRYLINE IS MODERATELY UNSTABLE WITH CAPE VALUES APPROACHING 1500 J/KG EARLY THIS AFTERNOON. THE STRONGEST AREAS OF LOCALIZED LIFT... OR CONVERGENCE ...HAS BEEN AND IS EXPECTED TO CONTINUE TO BE LOCATED JUST NORTHEAST OF THE SURFACE LOW PRESSURE AREA. THIS AREA WILL BE THE MOST LIKELY AREA FOR INITIAL THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON. SUBSEQUENT THUNDERSTORMS MAY ALSO DEVELOP SOUTHWARD ALONG THE DRY LINE. ANY STORMS THAT DEVELOP WILL BE SEVERE WITH LARGE HAIL AND A FEW DAMAGING WIND GUSTS EXPECTED. GIVEN THE EXPECTED AMOUNT OF INSTABILITY AND STORM-RELATIVE WIND PROFILE...SUPERCELL STORMS WILL ALSO BE POSSIBLE. INSTABILITY IS EXPECTED TO REMAIN SUFFICIENTLY LOW TO MAKE TORNADO DEVELOPMENT UNLIKELY...HOWEVER IF TEMPERATURES AND MOISTURE INCREASE MORE THAN EXPECTED...THE THREAT OF TORNADOES WILL INCREASE SIGNIFICANTLY. MOVEMENT OF ANY STORMS THAT DEVELOP WILL BE EAST AT 25 TO 30 MPH WITH POSSIBLE SUPERCELL MOVEMENT SOUTHEAST AT AROUND 20 MPH. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE REQUIRED IN NORTHWEST ARKANSAS AND EXTREME EASTERN OKLAHOMA AFTER 4PM TODAY.
Special weather statement, Mar 5, 1:00 PM CST, 2 hours 51 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-061200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CST FRI MAR 5 1999 SEVERE WEATHER WILL BE POSSIBLE WILL BE POSSIBLE LATE THIS AFTERNOON AND THIS EVENING IN NORTHWEST ARKANSAS AND PARTS OF EXTREME EASTERN OKLAHOMA. THE THREAT WILL BE PRIMARILY EAST OF US-69...EAST AND NORTH OF A LINE FROM MIAMI TO MCALESTER TO TALIHINA. PEOPLE IN THESE AREAS SHOULD MONITOR THE LATEST WEATHER CONDITIONS AND LISTEN FOR THE LATEST INFORMATION FROM THE NATIONAL WEATHER SERVICE. .SYNOPSIS... AN AREA OF LOW PRESSURE AT THE SURFACE WAS LOCATED NEAR BARTLESVILLE OKLAHOMA EARLY THIS AFTERNOON. A COLD FRONT AND DRY LINE EXTENDED SOUTHWARD FROM THE LOW PRESSURE INTO SOUTHCENTRAL OKLAHOMA. THIS LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE EAST THIS AFTERNOON...REACHING SOUTHWEST MISSOURI AND NORTHWEST ARKANSAS BY SUNSET. SEVERE THUNDERSTORMS MAY DEVELOP ALONG AND AHEAD OF THE LOW PRESSURE AREA LATE THIS AFTERNOON. .DISCUSSION... ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE LATE THIS AFTERNOON AND THIS EVENING EAST OF US-69. A CAPPING LAYER OF RELATIVELY WARM AIR IN THE MID LEVELS OF THE ATMOSPHERE HAS PROHIBITED THE DEVELOPMENT OF THUNDERSTORMS TODAY. THIS CAP WILL CONTINUE TO PERSIST...BUT IS EXPECTED TO WEAKEN LATE THIS AFTERNOON AND THIS EVENING MAINLY NORTH OF I-40. THE ATMOSPHERE AHEAD OF THE COLD FRONT AND DRYLINE IS MODERATELY UNSTABLE WITH CAPE VALUES APPROACHING 1500 J/KG EARLY THIS AFTERNOON. THE STRONGEST AREAS OF LOCALIZED LIFT... OR CONVERGENCE ...HAS BEEN AND IS EXPECTED TO CONTINUE TO BE LOCATED JUST NORTHEAST OF THE SURFACE LOW PRESSURE AREA. THIS AREA WILL BE THE MOST LIKELY AREA FOR INITIAL THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON. SUBSEQUENT THUNDERSTORMS MAY ALSO DEVELOP SOUTHWARD ALONG THE DRY LINE. ANY STORMS THAT DEVELOP WILL BE SEVERE WITH LARGE HAIL AND A FEW DAMAGING WIND GUSTS EXPECTED. GIVEN THE EXPECTED AMOUNT OF INSTABILITY AND STORM-RELATIVE WIND PROFILE...SUPERCELL STORMS WILL ALSO BE POSSIBLE. INSTABILITY IS EXPECTED TO REMAIN SUFFICIENTLY LOW TO MAKE TORNADO DEVELOPMENT UNLIKELY...HOWEVER IF TEMPERATURES AND MOISTURE INCREASE MORE THAN EXPECTED...THE THREAT OF TORNADOES WILL INCREASE SIGNIFICANTLY. MOVEMENT OF ANY STORMS THAT DEVELOP WILL BE EAST AT 25 TO 30 MPH WITH POSSIBLE SUPERCELL MOVEMENT SOUTHEAST AT AROUND 20 MPH. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE REQUIRED IN NORTHWEST ARKANSAS AND EXTREME EASTERN OKLAHOMA AFTER 4PM TODAY.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 3:23 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 52 min |
| Mar 5, 3:37 PM CST | Severe Thunderstorm Warning | TSA | Craig, Delaware, Ottawa | 68 min |
| Mar 5, 4:37 PM CST | Severe Thunderstorm Warning | TSA | Delaware | 53 min |
| Mar 5, 4:56 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 49 min |
| Mar 5, 4:27 PM CST | Tornado Warning | TSA | Crawford | 48 min |
| Mar 5, 4:42 PM CST | Tornado Warning | TSA | Franklin | 33 min |
| Mar 5, 5:10 PM CST | Tornado Warning | TSA | Franklin | 50 min |
| Mar 5, 5:16 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Sebastian | 29 min |
| Mar 5, 5:46 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 44 min |
Nearby
Tornado Warnings in Oklahoma, 1999Tornado Warnings in Arkansas, 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.