Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 49, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at May 4, 1999, 7:26 AM CDT for Osage County, Oklahoma. It was in force for 34 min. No storm report in the archive falls 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.
The facts
- Issued
- May 4, 1999, 7:26 AM CDT (12:26 UTC)
- Expired
- May 4, 1999, 8:00 AM CDT
- In force
- 34 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Osage County, OK
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 4, 5:00 AM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 0.4 hours before the alert went out and 171 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
- 2175 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 369 m²/s²
- 0-3 km storm-relative helicity
- 497 m²/s²
- Significant tornado parameter
- 5.3
- Supercell composite
- 24.7
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS54 KTSA 041227 RRA TORTUL OKC113-041300- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 726 AM CDT TUE MAY 4 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR WESTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 800 AM CDT * AT 726 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 5 MILES WEST OF FAIRFAX. MOVING NORTHEAST AT 30 MPH...THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... BURBANK... FAIRFAX AND SHIDLER 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 3661 9693 3648 9677 3673 9642 3689 9662
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 9:44 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 46 min |
| May 3, 10:29 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 61 min |
| May 3, 10:37 PM CDT | Tornado Warning | TSA | Creek | 53 min |
| May 3, 11:08 PM CDT | Tornado Warning | TSA | Osage, Pawnee | 37 min |
| May 3, 11:11 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 49 min |
| May 3, 11:19 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 41 min |
| May 3, 11:32 PM CDT | Tornado Warning | TSA | Creek, Tulsa | 43 min |
| May 3, 11:40 PM CDT | Tornado Warning | TSA | Osage | 50 min |
| May 3, 11:43 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 47 min |
| May 3, 11:43 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 47 min |
| May 3, 11:52 PM CDT | Tornado Warning | TSA | Pawnee | 38 min |
| May 3, 11:58 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes, Rogers | 47 min |
| May 4, 12:10 AM CDT | Tornado Warning | TSA | Tulsa | 50 min |
| May 4, 12:18 AM CDT | Tornado Warning | TSA | Rogers | 57 min |
| May 4, 12:25 AM CDT | Tornado Warning | TSA | Osage, Pawnee | 35 min |
| May 4, 1:01 AM CDT | Tornado Warning | TSA | Osage, Pawnee | 44 min |
| May 4, 1:24 AM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 51 min |
| May 4, 1:42 AM CDT | Tornado Warning | TSA | Osage | 33 min |
| May 4, 1:47 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 43 min |
| May 4, 1:51 AM CDT | Tornado Warning | TSA | Muskogee | 39 min |
| May 4, 1:57 AM CDT | Tornado Warning | TSA | Cherokee | 33 min |
| May 4, 2:04 AM CDT | Tornado Warning | TSA | Okfuskee | 41 min |
| May 4, 2:28 AM CDT | Tornado Warning | TSA | Muskogee | 32 min |
| May 4, 2:36 AM CDT | Tornado Warning | TSA | Okfuskee, Okmulgee | 39 min |
| May 4, 2:38 AM CDT | Tornado Warning | TSA | Wagoner | 52 min |
| May 4, 2:46 AM CDT | Tornado Warning | TSA | Delaware | 44 min |
| May 4, 3:11 AM CDT | Tornado Warning | TSA | Adair | 34 min |
| May 4, 7:35 AM CDT | Tornado Warning | TSA | Latimer | 40 min |
| May 4, 7:54 AM CDT | Tornado Warning | TSA | LeFlore | 66 min |
| May 4, 8:37 AM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 38 min |
| May 4, 9:04 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 56 min |
| May 4, 10:17 AM CDT | Severe Thunderstorm Warning | TSA | Nowata | 43 min |
| May 4, 10:24 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg, Pushmataha | 51 min |
| May 4, 10:56 AM CDT | Tornado Warning | TSA | Latimer, Pittsburg, Pushmataha | 49 min |
| May 4, 11:05 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 60 min |
| May 4, 11:13 AM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 47 min |
| May 4, 11:23 AM CDT | Flash Flood Warning | TSA | Creek, Rogers, Tulsa, Washington | 4 hr |
| May 4, 11:23 AM CDT | Flash Flood Warning | TSA | Craig, Nowata | 4 hr |
| May 4, 11:29 AM CDT | Tornado Warning | TSA | Latimer | 46 min |
| May 4, 11:48 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 57 min |
| May 4, 11:48 AM CDT | Tornado Warning | TSA | Haskell, LeFlore | 42 min |
| May 4, 11:57 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 48 min |
| May 4, 12:21 PM CDT | Tornado Warning | TSA | Haskell, Sequoyah | 54 min |
| May 4, 12:59 PM CDT | Tornado Warning | TSA | Adair | 46 min |
| May 4, 1:09 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee | 51 min |
| May 4, 1:22 PM CDT | Flash Flood Warning | TSA | Haskell, McIntosh, Muskogee, Pittsburg | 3 hr |
| May 4, 1:22 PM CDT | Flash Flood Warning | TSA | Adair, Cherokee, LeFlore, Sequoyah | 3 hr |
| May 4, 1:22 PM CDT | Flash Flood Warning | TSA | Mayes, Wagoner | 3 hr |
| May 4, 1:22 PM CDT | Flash Flood Warning | TSA | Latimer | 3 hr |
| May 4, 1:22 PM CDT | Flash Flood Warning | TSA | Delaware, Ottawa | 3 hr |
| May 4, 1:44 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 46 min |
| May 4, 1:50 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 40 min |
| May 4, 1:53 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw | 67 min |
| May 4, 2:06 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 39 min |
| May 4, 2:29 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 46 min |
| May 4, 2:39 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 51 min |
| May 4, 2:39 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 51 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; the sounding from the Mesonet's radiosonde archive.