Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 171, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 9, 2000, 1:30 AM CDT for Nowata County, Oklahoma. It was in force for 45 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 9, 2000, 1:30 AM CDT (06:30 UTC)
- Expired
- May 9, 2000, 2:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Nowata County, OK
The radar
The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 06:29 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 9, 1:45 AM CDT | Hail 1.75 | Lenapah, OK |
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 9, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.5 hours before the alert went out and 162 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
- 1344 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 1790 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 090630 SVRTUL OKC105-090715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 130 AM CDT TUE MAY 9 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NOWATA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 215 AM CDT * AT 128 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF WANN...MOVING EAST AT 35 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WANN... LENAPAH...DELAWARE AND CHILDERS HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
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 9, 12:12 AM CDT, 1 hour 18 minutes earlier.
Area forecast discussion, May 9, 12:12 AM CDT, 1 hour 18 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1210 PM CDT MON MAY 8 2000 UPDATED ZONES AGAIN TO UPDATE HEADLINES AND LOWER POPS SOUTH OF FFA AREA. MOST OF RAINFALL WILL BE CONFINED TO THE NORTHERN HALF OF THE FFA...BUT AM NOT CONFIDENT ENOUGH TO CANCEL THE SOUTHERN HALF OF THE WATCH AREA AT THIS TIME GIVEN THE CURRENT STATE OF FLOODING IN THOSE AREAS. FCSTID = 19 .TUL... AR...NONE. OK...FLASH FLOOD WATCH FOR MONDAY NIGHT FOR ZONES OKZ054>064... OKZ067.
In the hours before
Local storm report, May 8, 11:39 PM CDT, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
831 PM CDT MON MAY 08 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0820 PM FORAKER OK .88 INCH HAIL
05/08/00 OSAGE
0825 PM PEARSONIA OK .88 INCH HAIL
05/08/00 OSAGELocal storm report, May 8, 11:40 PM CDT, 1 hour 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
905 PM CDT MON MAY 08 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0858 PM BARTLESVILLE OK .88 INCH HAIL
05/08/00 WASHINGTON
0859 PM COPAN OK .75 INCH HAIL
05/08/00 WASHINGTON
0903 PM COPAN OK 1 INCH HAIL
05/08/00 WASHINGTONLocal storm report, May 8, 11:44 PM CDT, 1 hour 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1144 PM CDT MON MAY 08 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
t
1111 PM PAWHUSKA OK 1.25 INCH HAIL
05/08/00 OSAGELocal storm report, May 8, 11:52 PM CDT, 1 hour 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1152 PM CDT MON MAY 8 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1128 PM BARTLESVILLE OK 4.5 INCH HAIL
05/08/00 WASHINGTON NUMEROUS REPORTS HAIL
UP TO SOFTBALL SIZE
1128 TO 1133 PM
(Special weather statement, May 9, 12:00 AM CDT, 1 hour 30 minutes before
OKZ054>062-064>067-090600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1200 AM CDT TUE MAY 9 2000 ...TORNADO WATCH NUMBER 246 EXPIRED... TORNADO WATCH NUMBER 246 FOR PARTS OF EASTERN OKLAHOMA HAS EXPIRED. SEVERE THUNDERSTORMS WILL CONTINUE IN FAR NORTHEAST OKLAHOMA IN THE COUNTIES THAT BORDER KANSAS AND A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THESE AREAS UNTIL 6AM. SEE SHORT TERM FORECASTS FROM THIS OFFICE FOR DETAILS CONCERNING THE THUNDERSTORMS. STAY TUNED TO THIS STATION FOR FURTHER INFORMATION FROM THE NATIONAL WEATHER SERVICE.
Local storm report, May 9, 12:16 AM CDT, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1216 AM CDT TUE MAY 09 2000
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1154 PM NOWATA OK .75 INCH HAIL
05/08/00 NOWATA
1155 PM LENAPAH OK FLOOD
05/08/00 NOWATA WATER COVERING NUMEROUS
ROADS IN AND AROUND
LENEPAH
1158 PM DEWEY OK FLOOD
05/08/00 WASHINGTON WATER 2-3 INCHES DEEP
IN BULLDOGGER APTS IN.
DEWEY AND WATER OVER
NUMEROUS STREETS IN
DEWEY AND BARTLESVILLEThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 7:31 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 59 min |
| May 8, 8:25 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 65 min |
| May 8, 8:40 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Osage, Washington | 65 min |
| May 8, 8:42 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 48 min |
| May 8, 8:50 PM CDT | Tornado Warning | TSA | Nowata, Washington | 25 min |
| May 8, 8:50 PM CDT | Tornado Warning | TSA | Osage | 25 min |
| May 8, 9:29 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 61 min |
| May 8, 9:34 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 56 min |
| May 8, 9:51 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 54 min |
| May 8, 10:46 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 59 min |
| May 8, 11:13 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 47 min |
| May 8, 11:29 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 61 min |
| May 8, 11:45 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 60 min |
| May 8, 11:56 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 49 min |
| May 8, 11:58 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 62 min |
| May 9, 3:02 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 43 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.