Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 183, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 23, 2001, 7:26 PM CDT for McIntosh County, Okmulgee County, Oklahoma. It was in force for 49 min. 1 report 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
- May 23, 2001, 7:26 PM CDT (00:26 UTC)
- Expired
- May 23, 2001, 8:15 PM CDT
- In force
- 49 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties McIntosh County, OK, Okmulgee County, OK
The radar
The Tulsa radar (KINX), 94 km from the middle of the area, began a volume at 00:29 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 |
|---|---|---|---|
| May 23, 7:46 PM CDT | Thunderstorm Wind | Hanna, OK | Thunderstorm winds blew the roof off a barn. |
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, 0.4 hours before the alert went out and 131 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
- 279 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 2611 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 240027 SVRTUL OKC091-111-240115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 726 PM CDT WED MAY 23 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN OKMULGEE COUNTY IN NORTHEAST OKLAHOMA SOUTHWESTERN MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 815 PM CDT * AT 726 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES WEST OF HENRYETTA...MOVING SOUTHEAST AT 50 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...VIVIAN... RAIFORD...HANNA...DEWAR AND HENRYETTA. STORM SPOTTERS REPORTED DIME SIZE HAIL IN OKFUSKEE COUNTY WITH THIS STORM. DIME SIZE HAIL AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3557 9612 3543 9611 3517 9597 3527 9557
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 May 23, 2:45 PM CDT, 4 hours 41 minutes earlier.
Area forecast discussion, May 23, 2:45 PM CDT, 4 hours 41 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 245 PM CDT WED MAY 23 2001 UPPER LOW LOCATED OVER MN/WI THIS AFTERNOON WILL CONTINUE TO INFLUENCE THE WEATHER THE NEXT FEW DAYS AS IT WOBBLES OVER THE MIDWEST. COLDER AIR ALOFT HAS LED TO SOME INSTABILITY SHOWERS AS CLOSE AS SOUTHWEST MO THIS AFTERNOON...AND MAY SEE ADDITIONAL SHOWERS AND THUNDERSTORMS THROUGH EARLY THIS EVENING ALONG WEAK SURFACE TROUGH THAT WILL BE DROPPING TO THE SOUTHEAST ACROSS THE AREA TONIGHT. SATL ALSO SHOWING AN IMPULSE OVER THE DAKOTAS THIS AFTERNOON ROTATING AROUND THE UPPER LOW...SO WILL KEEP LOW POPS GOING THROUGH THE NIGHT RATHER THAN CONFINE TO JUST THIS EVENING. WITH UPPER SYSTEM WOBBLING A LITTLE CLOSER FOR THURSDAY WILL ALSO KEEP THE SLIGHT CHANCE OF SHOWERS ALREADY IN THE FORECAST FOR THURSDAY WITH MAYBE A FEW SPRINKLES OR LIGHT SHOWERS AROUND. PROBABLY BETTER CHANCES IN FAR NORTHEAST AREAS. SEE NO REASON TO MAKE ANY BIG CHANGES TO THE EXTENDED PART OF THE FORECAST WITH A GENERALLY DRY WEEKEND...THEN AT LEAST A CHANCE OF PRECIP BY MEMORIAL DAY INTO THE EARLY PART OF THE WEEK. COOLER TEMPS IN STORE FOR THURSDAY...THEN DAYTIME HIGHS WILL MODERATE AGAIN FRIDAY INTO THE WEEKEND. FCSTID = 4 TUL 49 70 46 74 / 20 20 10 10 FSM 50 70 45 74 / 20 20 10 10 MLC 50 70 46 75 / 20 20 10 10 BVO 46 68 43 72 / 20 20 10 10 FYV 44 65 40 68 / 20 20 10 10 BYV 44 65 40 68 / 20 20 10 10 MIO 45 67 42 70 / 20 20 10 10 MKO 49 70 46 74 / 20 20 10 10 F10 49 70 46 74 / 20 20 10 10 HHW 50 70 47 75 / 20 20 10 10 .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 |
|---|---|---|---|---|
| May 23, 7:49 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 56 min |
| May 23, 8:15 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 45 min |
| May 23, 10:16 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 44 min |
| May 23, 10:24 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 51 min |
| May 23, 10:28 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Pittsburg, Sequoyah | 62 min |
| May 23, 10:45 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 45 min |
| May 23, 10:51 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 54 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.