Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 276, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 28, 2001, 10:54 PM CDT for Tulsa County, Oklahoma. It was in force for 51 min. 2 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
- Jun 28, 2001, 10:54 PM CDT (03:54 UTC)
- Expired
- Jun 28, 2001, 11:45 PM CDT
- In force
- 51 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Tulsa County, OK
The radar
The Tulsa radar (KINX), 32 km from the middle of the area, began a volume at 03:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 28, 11:04 PM CDT | Hail 0.75 | Tulsa, OK | Penny size hail was reported near the intersection of 41st street and 129 east avenue. |
| Jun 28, 11:15 PM CDT | Hail 1.75 | Tulsa, OK | Golfball size hail was reported near the intersection of 61st street and countyline road. |
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, 3.9 hours before the alert went out and 167 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
- 241 J/kg
- Mixed-layer CIN
- -416 J/kg
- Mixed-layer LCL
- 1721 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 390 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 290355 SVRTUL OKC143-290445- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1054 PM CDT THU JUN 28 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TULSA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 1145 PM CDT * AT 1054 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTH OF TULSA...MOVING SOUTH AT 20 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GLENPOOL... JENKS...BIXBY AND TULSA. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3630 9588 3616 9605 3587 9601 3592 9576
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 28, 9:30 PM CDT, 1 hour 24 minutes earlier.
Area forecast discussion, Jun 28, 9:30 PM CDT, 1 hour 24 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 930 PM CDT THU JUN 28 2001 CONVECTION OVER SE OK THIS EVENING APPEARS TO BE DIURNALLY BASED AND HAS BEEN GRADUALLY WEAKENING OVER THE PAST HOUR. HOWEVER...LOW-LEVEL JET IS STARTING TO KICK IN OVER WRN/CNTRL OK (AREA PROFILERS SHOWING 20-25KT SWLY 850-875 MB WINDS)...AND HAVE NOTED AN INCREASE IS ELEVATED CONVECTION OVER CNTRL OK. 00Z MESOETA SHOWS SOME IMPRESSIVE UPGLIDE ALONG 305K SURFACE OVER ERN OK AFTER MIDNIGHT...AND SUGGESTS THAT CONVECTION WILL DEVELOP FARTHER E INTO ENTRL/SE OK LATER TONIGHT. A GENERAL SWD MOVEMENT IS EXPECTED...WHICH WILL RESULT IN SOME TRAINING AND LOCALLY HEAVY RAINFALL. WILL INCLUDE MENTION OF POSSIBLE HEAVY RAIN FOR SE OK. WILL LEAVE HIGHEST POPS ACROSS SE OK...AND PLAN ON TRIMMING BACK POPS ACROSS FAR NE OK AND NW AR. UPDATE WILL BE OUT AROUND 945 PM. FCSTID = 18 .TSA... AR...NONE. OK...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 11:15 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 45 min |
| Jun 28, 11:47 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 43 min |
| Jun 29, 12:49 AM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers | 41 min |
| Jun 29, 1:27 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 63 min |
| Jun 29, 1:58 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 62 min |
| Jun 29, 3:00 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 45 min |
| Jun 29, 3:22 AM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 53 min |
| Jun 29, 3:47 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 58 min |
| Jun 29, 4:15 AM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| Jun 29, 4:15 AM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 60 min |
| Jun 29, 4:30 AM CDT | Severe Thunderstorm Warning | TSA | Rogers | 45 min |
| Jun 29, 4:44 AM CDT | Flash Flood Warning | TSA | Rogers, Wagoner | 3 hr |
| Jun 29, 6:12 AM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 48 min |
| Jun 29, 7:38 AM CDT | Flash Flood Warning | TSA | Rogers, Wagoner | 112 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
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; radar from the NEXRAD Level II archive.