Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 307, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 23, 2000, 12:53 AM CDT for Nowata County, Oklahoma. It was in force for 37 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
- Sep 23, 2000, 12:53 AM CDT (05:53 UTC)
- Expired
- Sep 23, 2000, 1:30 AM CDT
- In force
- 37 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Nowata County, OK
The radar
The Tulsa radar (KINX), 74 km from the middle of the area, began a volume at 05:56 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 22, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 160 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
- 857 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1731 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 230558 COR SVRTUL OKC105-230630- BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED HEADER SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1253 AM CDT SAT SEP 23 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NOWATA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 130 AM CDT * AT 1253 AM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTH OF LENAPAH TO 2 MILES WEST OF NOWATA...MOVING EAST AT 35 MPH. * SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...NEW ALLUWE...LENAPAH...DELAWARE AND NOWATA. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3701 9567 3664 9582 3660 9543 3696 9542
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 Sep 22, 9:20 PM CDT, 3 hours 33 minutes earlier.
Area forecast discussion, Sep 22, 9:20 PM CDT, 3 hours 33 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 920 PM CDT FRI SEP 22 2000 LINEAR BAND OF MAINLY OUTFLOW-DRIVEN CONVECTION CONTINUES TO MOVE GRADUALLY SE ACROSS SE KS THIS EVENING. 35 KT SSW LOW-LEVEL JET WILL STRENGTHEN AND VEER OVER CNTRL/NRN OK OVERNIGHT...WHICH SHOULD AID IN SOME BACKBUILDING ALONG SWRN END OF LINE. ATMOSPHERE REMAINS RATHER UNSTABLE ACROSS NE OK...AND LINE HAS SHOWN SOME SEWD ACCELERATION...SO THINK IT'S PRUDENT TO ADD POPS FOR NE OK. WILL GO WITH HIGHEST POPS ALONG KS BORDERING COUNTIES...ALTHOUGH I'M NOT TOO CONFIDENT AS TO HOW FAR S THIS ACTIVITY WILL BUILD INTO ERN OK. ALSO KEEPING AN EYE ON CONVECTION OVER SWRN OK. WHILE THIS ACTIVITY MAY KEEP GOING FOR A FEW HOURS...DON'T THINK IT WILL MAKE IT INTO OUR FORECAST AREA. UPDATED ZONES OUT SHORTLY. FCSTID = 18 .TUL... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Sep 22, 10:45 PM CDT, 2 hours 8 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-231100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1045 PM CDT FRI SEP 22 2000 ...A FEW SEVERE THUNDERSTORMS POSSIBLE OVER FAR NORTHEAST OKLAHOMA TONIGHT... .SYNOPSIS... A SURFACE COLD FRONT WAS LOCATED FROM NORTHEAST KANSAS AND EXTENDED SOUTHWEST INTO NORTHWEST OKLAHOMA. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED ALONG THE FRONT EARLIER ACROSS SOUTHERN KANSAS AND HAVE BEEN MOVING EAST SOUTHEAST. .PRIMARY HAZARD... LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS WITH ANY SEVERE STORMS TONIGHT. .DISCUSSION... STRONG TO SEVERE THUNDERSTORMS HAVE BEEN MOVING EAST SOUTHEAST ACROSS OUT AHEAD OF A SURFACE COLD FRONT THIS EVENING. A MODERATELY UNSTABLE AIRMASS OUT AHEAD OF THE FRONT COMBINED WITH A 35 TO 45 KNOT LOW LEVEL JET WILL SUPPORT THUNDERSTORM MOVEMENT INTO PORTIONS OF NORTHEAST OKLAHOMA TONIGHT. STORMS ARE EXPECTED TO WEAKEN BY 3 AM AS THEY MOVE FURTHER AWAY FROM THE COLD FRONT AND LOW LEVEL JET AXIS. .OTHER HAZARDS... EXTREME FIRE DANGER ACROSS ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. MOST LOCATIONS WILL REMAIN DRY TONIGHT...AND ANY RAINFALL THAT OCCURS IN THE AREA OUTLOOKED FOR SEVERE THUNDERSTORMS IS NOT EXPECTED TO BREAK THE EXTREME FIRE DANGER.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 1:15 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 45 min |
| Sep 23, 1:54 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware, Ottawa | 66 min |
| Sep 23, 3:42 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 48 min |
| Sep 23, 4:24 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 51 min |
| Sep 23, 4:39 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Pittsburg | 51 min |
| Sep 23, 4:50 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 55 min |
| Sep 23, 4:56 PM CDT | Severe Thunderstorm Warning | TSA | Adair | 49 min |
| Sep 23, 5:28 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Pittsburg | 62 min |
| Sep 23, 5:57 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 33 min |
| Sep 23, 6:13 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 62 min |
| Sep 23, 6:40 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 50 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2000Every severe thunderstorm warning in 2000
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; radar from the NEXRAD Level II archive.