Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 92, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Sep 10, 1999, 6:39 PM CDT for Okfuskee County, Oklahoma. It was in force for 36 min. 3 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
- Sep 10, 1999, 6:39 PM CDT (23:39 UTC)
- Expired
- Sep 10, 1999, 7:15 PM CDT
- In force
- 36 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Okfuskee County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 10, 6:47 PM CDT | Tornado F1 | Castle, OK | An F1 tornado touched down about 3 miles north of Castle, travelling approximately 3.5 miles southeast before lifting about 2 miles east of Castle. Along the way, this storm completely ripped the roof from one permanent wood-frame house about 2 miles northeas |
| Sep 10, 7:00 PM CDT | Hail 2.75 | Okemah, OK | There were several reports of large hail from Okemah to Clearview. Following are individual reports:Time (CDT) Location Size700 PM Okemah .88"707 PM Okemah 1"710 PM 3 E Okemah 2.75"715 PM Okemah 1.75"720 PM Clearview 1"The hail in Okemah broke and c |
| Sep 10, 7:10 PM CDT | Thunderstorm Wind 70 | Castle, OK | There were several reports of damaging and severe thunderstorm winds from Castle, east-southeast through Okemah, to Weleetka. Starting in Castle, many trees were damaged, including a 125-foot tall cottonwood tree that was uprooted. Down the road in Okemah, n |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 10, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.7 hours before the alert went out and 97 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
- 2357 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 240 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 102341 RRA TORTUL OKC107-110015- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 639 PM CDT FRI SEP 10 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA * UNTIL 715 PM CDT * AT 639 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES WEST OF CASTLE...MOVING EAST AT 30 MPH...THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CASTLE AND OKEMAH 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 HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS! 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 3555 9653 3538 9656 3529 9611 3553 9611
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 Sep 10, 3:30 PM CDT, 3 hours 9 minutes earlier.
Area forecast discussion, Sep 10, 3:30 PM CDT, 3 hours 9 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 330 PM CDT FRI SEP 10 1999 PROBLEM(S) OF THE DAY: WILL THE CONVECTION BE SCATTERED OR NUMEROUS? HOW MUCH RAIN WILL FALL? DESPITE MOVING INTO A DRIER AIR MASS...AREA OF THUNDERSTORMS THIS MORNING PERSISTED AND REMAINED STRONG INTO THE AFTERNOON. IT HAS LEFT A WELL-DEFINED OUTFLOW BOUNDARY WHICH EXTENDS BACK INTO NORTH CENTRAL OKLAHOMA. MODELS INDICATE AN UPPER LEVEL DISTURBANCE MOVING INTO WESTERN KANSAS WHICH WILL ACTIVATE A NEW ROUND OF STORMS WITHIN THE WATCH AREA THIS EVENING. WOULD GUESS THAT ACTIVITY IN WESTERN PORTIONS OF WATCH AREA THIS EVENING WILL SPREAD INTO EASTERN OKLAHOMA LATER TONIGHT. IN THE MEANTIME...ATMOSPHERE OVER EASTERN PORTIONS OF WATCH AREA WILL RE-DESTABILIZE LATER TONIGHT AS DEEPER LOW LEVEL MOISTURE WILL INCREASE RAPIDLY TONIGHT. AFTER THE ROUND OF THUNDERSTORMS OVERNIGHT...EXPECT A TEMPORARY BREAK EARLY SATURDAY. THEN IT MAY BE A MATTER OF FINDING THE BOUNDARIES LEFT OVER FROM THE LATE NIGHT CONVECTION. AFTER THAT...THE NEXT PROBLEM WILL BE TIMING A STRONG COLD FRONT AS IT MOVES SOUTHEASTWARD INTO FORECAST AREA. LOOKS LIKE FRONT WILL ENTER INTO AREA DURING THE DAY SUNDAY. WILL BRING BACK A CHANCE OF THUNDERSTORMS LATE SATURDAY NIGHT AND CONTINUE IT INTO SUNDAY. ETA IS THE STRONGEST MODEL WITH THE COLD FRONT AND WILL LEAN TOWARDS IT. EXTENDED FORECAST LOOKS DRY AND COOL. FCSTID = 11 TUL 65 88 67 85 / 50 30 20 40 FSM 63 90 67 87 / 30 40 30 30 MLC 65 90 66 87 / 30 40 30 30 BVO 63 87 65 84 / 60 30 20 40 FYV 60 86 62 84 / 30 40 20 30 BYV 60 86 62 84 / 30 40 20 30 MIO 63 87 65 84 / 60 30 20 40 MKO 65 88 67 85 / 50 30 20 40 F10 65 88 67 85 / 50 30 20 40 HHW 65 90 66 87 / 30 40 30 30 .TUL... AR...NONE. OK...SEVERE THUNDERSTORM WARNING UNTIL 342 PM CDT FridAy FOR ZONES OKZ070...OKZ067...OKZ066. SEVERE THUNDERSTORM WATCH UNTIL 900 PM CDT FridAy FOR ZONES OKZ054>072...OKZ074...OKZ076. -------------------- EXPERIMENTAL OUTPUT: HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: GOOD CHANCE SEVERE THUNDERSTORMS NGM CONFIDENCE: 6 ON A SCALE OF 0 TO 10 ETA CONFIDENCE: 8 ON A SCALE OF 0 TO 10 AVN CONFIDENCE: 7 ON A SCALE OF 0 TO 10 FCST CONFIDENCE: 7 ON A SCALE OF 0 TO 10
In the hours before
Local storm report, Sep 10, 4:41 PM CDT, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
441 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0438 PM STIGLER OK 60 MPH TSTM GUST
09/10/99 HASKELL ESTIMATED GUST FROM
SHERIFFS OFFICELocal storm report, Sep 10, 4:41 PM CDT, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
441 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0438 PM STIGLER OK 60 MPH TSTM GUST
09/10/99 HASKELL ESTIMATED GUST FROM
SHERIFFS OFFICELocal storm report, Sep 10, 5:00 PM CDT, 1 hour 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
500 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0430 PM 6 W MARAMEC OK 60 MPH TSTM GUST
09/10/99 PAWNEE ESTIMATED GUST FROM
PUBLIC AT REST STOP ON
CIMARRON TURNPIKELocal storm report, Sep 10, 6:12 PM CDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
612 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0552 PM SHAMROCK OK .75 INCH HAIL
09/10/99 CREEK
0604 PM BRISTOW OK 1 INCH HAIL
09/10/99 CREEKLocal storm report, Sep 10, 6:21 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
621 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0605 PM 2 NW BRISTOW OK 2 INCH HAIL
09/10/99 CREEKLocal storm report, Sep 10, 6:21 PM CDT, 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
621 PM CDT FRI SEP 10 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0605 PM 2 NW BRISTOW OK 2 INCH HAIL
09/10/99 CREEKThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 1:54 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 36 min |
| Sep 10, 2:13 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 47 min |
| Sep 10, 2:57 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Okmulgee, Wagoner | 48 min |
| Sep 10, 3:21 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 54 min |
| Sep 10, 3:45 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee | 45 min |
| Sep 10, 3:59 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Sequoyah | 61 min |
| Sep 10, 4:09 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 36 min |
| Sep 10, 4:11 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 49 min |
| Sep 10, 4:19 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 41 min |
| Sep 10, 4:45 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 60 min |
| Sep 10, 4:50 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 40 min |
| Sep 10, 4:55 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 35 min |
| Sep 10, 5:29 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 46 min |
| Sep 10, 5:29 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 46 min |
| Sep 10, 6:04 PM CDT | Tornado Warning | TSA | Okfuskee | 26 min |
| Sep 10, 6:10 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 50 min |
| Sep 10, 6:27 PM CDT | Tornado Warning | TSA | Okfuskee | 33 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.