Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 238, NWS Tulsa, OK

May 26, 2000Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 26, 2000, 3:33 AM CDT for Washington County, Oklahoma. It was in force for 57 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 26, 2000, 3:33 AM CDT (08:33 UTC)
Expired: May 26, 2000, 4:30 AM CDT
In force: 57 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Washington County, OK

The radar

The Tulsa radar (KINX), 67 km from the middle of the area, began a volume at 08:34 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 26, 3:41 AM CDT	Thunderstorm Wind	Dewey, OK	Thunderstorm winds blew a tree down.

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 26, 12:30 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 8.6 hours before the alert went out and 141 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1965 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 633 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 8.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

484 
WUUS54 KTSA 260833
SVRTUL
OKC147-260930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
333 AM CDT FRI MAY 26 2000

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 430 AM CDT

* AT 332 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST
  OF COPAN TO 8 MILES WEST OF OCHELATA TO 17 MILES SOUTHWEST OF
  OCHELATA...MOVING EAST AT 30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...COPAN...
DEWEY...OCHELATA...RAMONA...VERA AND BARTLESVILLE

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 65 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

THIS STORM HAS A HISTORY OF PRODUCING 60 MPH WINDS IN OSAGE COUNTY.

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS.

CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER
SERVICE.

$$

DRM

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 26, 12:58 AM CDT, 2 hours 35 minutes earlier.

Area forecast discussion, May 26, 12:58 AM CDT, 2 hours 35 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1258 AM CDT FRI MAY 26 2000

SENT A QUICK UPDATE TO REFLECT TORNADO WATCH FOR ZONES MAINLY NORTH OF
HIGHWAY 412 IN NORTHEAST OK. 88D INDICATES ELEVATED SHOWERS POPPING UP BETWEEN
TUL AND BVO THOUGH STRONGEST ACTIVITY STILL WEST AND NORTHWEST OF CWA.
CURRENT POP FORECAST IN LINE WITH CURRRENT TRENDS SO LEFT AS IS.

FCSTID = 23

.TUL...
AR...NONE.
OK...TORNADO WATCH UNTIL 600 AM CDT FOR ZONES OKZ054>064.

In the hours before

Local storm report, May 26, 3:27 AM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
327 AM CDT FRI MAY 26 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

03309 AM    4 N HOMINY                OK   60 MPH TSTM WIND GUST
05/26/00   OSAGE                          AMATEUR RADIO REPORT

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 1:52 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	68 min
May 26, 2:56 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	64 min
May 26, 3:51 AM CDT	Flash Flood Warning	TSA	Osage, Pawnee	2 hr
May 26, 6:47 AM CDT	Severe Thunderstorm Warning	TSA	Mayes	43 min
May 26, 10:24 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	66 min
May 26, 10:24 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	66 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2000 Every 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.