Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 223, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 30, 2001, 1:12 AM CDT for Rogers County, Oklahoma. It was in force for 48 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
- May 30, 2001, 1:12 AM CDT (06:12 UTC)
- Expired
- May 30, 2001, 2:00 AM CDT
- In force
- 48 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Rogers County, OK
The radar
The Tulsa radar (KINX), 22 km from the middle of the area, began a volume at 06:13 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 30, 1:20 AM CDT | Thunderstorm Wind | Oologah, OK | Thunderstorm winds blew down large tree limbs. |
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 |
|---|---|---|---|
| May 30, 12:30 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.2 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 29, 11:10 PM CDT, 2 hours 2 minutes earlier.
Area forecast discussion, May 29, 11:10 PM CDT, 2 hours 2 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1110 PM CDT TUE MAY 29 2001 SENT A QUICK UPDATE OUT FOR ADDITION OF TORNADO WATCH UNTIL 400 AM. ALSO ADDED oHEAVY RAIN WORDING TO FLASH FLOOD WATCH ZONES. HOWIESON FCSTID = 44 .TSA... AR...NONE. OK...FLASH FLOOD WATCH FOR THIS EVENING THROUGH WEDNESDAY MORNING FOR ZONES OKZ054>068...OKZ070>071.
In the hours before
Special weather statement, May 29, 9:50 PM CDT, 3 hours 22 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-301100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 950 PM CDT TUE MAY 29 2001 ...A FEW SEVERE THUNDERSTORMS EXPECTED TONIGHT... SEVERAL CLUSTERS OF STRONG TO SEVERE THUNDERSTORMS HAD DEVELOPED THIS EVENING ACROSS KANSAS AND WESTERN OKLAHOMA. CONDITIONS ARE FAVORABLE FOR THUNDERSTORMS TO SPREAD INTO EASTERN OKLAHOMA BEFORE MIDNIGHT...AND INTO NORTHWEST ARKANSAS BY 2 AM. A FEW OF THE THUNDERSTORMS ARE LIKELY TO BE SEVERE OVERNIGHT...WITH NICKEL SIZE HAIL AND WIND GUSTS UP TO 70 MPH POSSIBLE. ADDITIONAL SEVERE WEATHER IS POSSIBLE OVER MUCH OF THE AREA WEDNESDAY AFTERNOON. .SPOTTER ACTIVATION... SPOTTERS ACROSS MUCH OF EASTERN OKLAHOMA WILL LIKELY NEED TO BE ACTIVATED BEFORE MIDNIGHT. SPOTTER ACTIVATION MAY BE REQUIRED IN NORTHWEST ARKANSAS BY 2 AM. .DISCUSSION... ELEVATED CAPES OF UP TO 2000 J/KG AND FAVORABLE DEEP LAYER WIND SHEAR WILL SUPPORT A CONTINUED EVOLUTION OF STRONG CONVECTION IN THE WARM ADVECTION REGIME. CONDITIONS ARE FAVORABLE FOR A LARGE COMPLEX OF THUNDERSTORMS TO MOVE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. BOW SEGMENTS...MAINLY ALONG THE LEADING EDGE OF THE EASTWARD MOVING THUNDERSTORM COMPLEX...WILL PRODUCE LOCAL WIND GUSTS OF 60 TO 70 MPH. A LOW LEVEL JET OF 50 KNOTS WILL EXTEND FROM SOUTH CENTRAL OKLAHOMA INTO NORTHEAST OKLAHOMA DURING THE LATE NIGHT AND EARLY MORNING HOURS...WHICH IS A FAVORABLE PATTERN FOR EXCESSIVE RAINS ACROSS NORTHEAST OKLAHOMA. THREAT TABLE VALID THROUGH 6 AM WEDNESDAY THREAT AREA 1...ALL OF EASTERN OKLAHOMA THUNDERSTORM PROBABILITY...100 SEVERE PROBABILITY IF STORMS OCCUR...90 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...25 THREAT AREA 2...NORTHWEST ARKANSAS THUNDERSTORM PROBABILITY...70 SEVERE PROBABILITY IF STORMS OCCUR...30 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...10 THREAT AREAS DEFINE THE GREATEST RISK. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE IS DEFINED AS F1 OR GREATER WIND/TORNADO DAMAGE AND/OR GOLFBALL SIZE HAIL OR LARGER. .OTHER HAZARDS... A FLASH FLOOD WATCH IS IN EFFECT FOR TONIGHT AND WEDNESDAY MORNING FOR MOST OF NORTHEAST OKLAHOMA. THE FLASH FLOOD WATCH MESSAGE /OKCFFATUL/ ISSUED AT 935 PM GIVES DETAILS ON THE HEAVY RAIN THREAT. RELATED GRAPHICAL INFORMATION CAN BE FOUND AT... WWW.SRH.NOAA.GOV/TULSA
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 11:00 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 60 min |
| May 29, 11:57 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 63 min |
| May 30, 12:47 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 58 min |
| May 30, 1:26 AM CDT | Flash Flood Warning | TSA | Creek, Tulsa | 3 hr |
| May 30, 2:07 AM CDT | Flash Flood Warning | TSA | Okmulgee, Wagoner | 3 hr |
| May 30, 2:30 AM CDT | Flash Flood Warning | TSA | Muskogee | 3 hr |
| May 30, 3:15 AM CDT | Flash Flood Warning | TSA | Cherokee | 3 hr |
| May 30, 3:59 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 46 min |
| May 30, 4:18 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 42 min |
| May 30, 5:47 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 43 min |
| May 30, 6:29 AM CDT | Flash Flood Warning | TSA | McIntosh, Muskogee | 3 hr |
| May 30, 6:29 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, McIntosh, Muskogee | 46 min |
| May 30, 6:36 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 24 min |
| May 30, 6:49 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 56 min |
| May 30, 7:04 AM CDT | Severe Thunderstorm Warning | TSA | Latimer | 56 min |
| May 30, 8:58 AM CDT | Flash Flood Warning | TSA | Cherokee, McIntosh, Muskogee, Okfuskee, Okmulgee, Sequoyah | 2 hr |
| May 30, 4:02 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 43 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.