Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 77, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Jun 1, 1999, 5:53 AM CDT for Haskell County, Pittsburg County, Oklahoma. It was in force for 67 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
- Jun 1, 1999, 5:53 AM CDT (10:53 UTC)
- Expired
- Jun 1, 1999, 7:00 AM CDT
- In force
- 67 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Haskell County, OK, Pittsburg County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 6:50 AM CDT | Hail 3 | Stigler, 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 00:00Z, 10.9 hours before the alert went out and 180 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
- 1985 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 1255 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS54 KTSA 011056 RRA TORTUL OKC061-121-011200- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 553 AM CDT TUE JUN 1 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR WESTERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA NORTHEASTERN PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 700 AM CDT * AT 553 AM CDT...RADAR INDICATED A DEVELOPING TORNADO 5 MILES NORTHWEST OF CANADIAN. THIS DANGEROUS STORM IS MOVING EAST AT 30 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... CANADIAN... INDIANOLA...QUINTON...CROWDER...WHITEFIELD...ENTERPRISE AND KINTA 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 NIGHTTIME TORNADOES ARE ESPECIALLY DANGEROUS - TAKE COVER NOW IF YOU WAIT UNTIL YOU SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE 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
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 May 31, 9:35 PM CDT, 8 hours 18 minutes earlier.
Area forecast discussion, May 31, 9:35 PM CDT, 8 hours 18 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 935 PM CDT MON MAY 31 1999 THE ATMOSPHERE IS AMASSING NUMEROUS CONVECTIVE WEAPONS ON OUR WESTERN FRONT THIS EVENING. IT STILL LOOKS LIKE THE SUPERCELLULAR STORMS OVER MUCH OF WESTERN OKLAHOMA WILL EVENTUALLY FORM INTO A COMPLEX AND SURGE ACROSS THE FORECAST AREA OVERNIGHT AND EARLY TOMORROW. THE PRIMARY CONCERN INITIALLY WILL BE THE POTENTIAL FOR VERY STRONG AND DAMAGING WINDS ON THE LEADING EDGE OF THE CONVECTION. HEAVY RAINFALL WILL ALSO BE A THREAT BEFORE THE COMPLEX PASSES COMPLETELY THROUGH THE AREA. HAVE UPDATED ZONES TO INCREASE POPS AND MENTION SEVERE FOR THE ENTIRE AREA TONIGHT. ALSO ISSUED FLASH FLOOD WATCH FOR TONIGHT AND TOMORROW MORNING FOR ALL BUT THE RED RIVER VALLEY. THE GROUND IS STILL WET OVER THE AREA FROM THIS MORNINGS RAINFALL RESULTING IN 3 HOUR FLASH FLOOD GUIDANCE VALUES UNDER 2 INCHES OVER THE WATCH AREA. WIDESPREAD 2 TO 3 INCH RAINFALL AMOUNTS ARE LIKELY BEFORE THE RAINS END TOMORROW. A SECOND COMPLEX OF THUNDERSTORMS OVER EASTERN COLORADO MAY ALSO EFFECT THE AREA BEGINNING VERY LATE TONIGHT. THIS WILL ONLY MAKE THE FLOODING SITUATION WORSE. FCSTID = 19 .TUL... AR...FFA FOR TONIGHT AND TUESDAY MORNING ALL ZONES. OK...FFA FOR TONIGHT AND TUESDAY MORNING ZNS 054-076.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 4:32 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 43 min |
| Jun 1, 4:45 AM CDT | Tornado Warning | TSA | Okfuskee | 45 min |
| Jun 1, 5:03 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 57 min |
| Jun 1, 5:12 AM CDT | Tornado Warning | TSA | McIntosh | 63 min |
| Jun 1, 6:04 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 41 min |
| Jun 1, 6:41 AM CDT | Tornado Warning | TSA | Haskell, LeFlore | 64 min |
| Jun 1, 3:56 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 49 min |
| Jun 1, 4:25 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 35 min |
| Jun 1, 4:47 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 43 min |
| Jun 1, 5:06 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 39 min |
| Jun 1, 5:12 PM CDT | Tornado Warning | TSA | Cherokee | 33 min |
| Jun 1, 5:36 PM CDT | Tornado Warning | TSA | Cherokee, Muskogee, Wagoner | 54 min |
| Jun 1, 6:22 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 48 min |
| Jun 1, 6:24 PM CDT | Tornado Warning | TSA | McIntosh, Muskogee | 66 min |
| Jun 1, 6:56 PM CDT | Tornado Warning | TSA | Haskell | 49 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.