Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 38, NWS Tulsa, OK

March 11, 20015 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 11, 2001, 11:22 PM CST for 5 counties in Oklahoma. It was in force for 53 min. 11 reports 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: Mar 11, 2001, 11:22 PM CST (05:22 UTC)
Expired: Mar 12, 2001, 12:15 AM CST
In force: 53 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Creek County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 47 km from the middle of the area, began a volume at 05:24 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
Mar 11, 11:24 PM CST	Hail 1	Bristow, OK
Mar 11, 11:24 PM CST	Thunderstorm Wind 52 E	Sand Spgs, OK
Mar 11, 11:30 PM CST	Thunderstorm Wind	Bristow, OK	Thunderstorm winds blew the roof off a house and a garage. The wind also blew the cover off a hot tub and the hood off of a car. Several trees were also uprooted.
Mar 11, 11:30 PM CST	Thunderstorm Wind	Avant, OK	Thunderstorm winds blew a large tree down onto Highway 20.
Mar 11, 11:35 PM CST	Thunderstorm Wind 50 E	Tulsa, OK
Mar 11, 11:35 PM CST	Thunderstorm Wind	Okemah, OK	Thunderstorm winds blew down several large tree limbs.
Mar 11, 11:45 PM CST	Hail 0.75	Beggs, OK
Mar 11, 11:45 PM CST	Thunderstorm Wind 61 E	Bixby, OK
Mar 12, 12:00 AM CST	Thunderstorm Wind 52 E	Talala, OK
Mar 12, 12:05 AM CST	Thunderstorm Wind	Coweta, OK	Thunderstorm winds blew down large tree limbs.
Mar 12, 12:06 AM CST	Thunderstorm Wind 52 E	Haskell, 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.4 hours before the alert went out and 157 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: 213 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 450 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 120523
SVRTUL
OKC037-107-111-113-131-143-145-147-120615-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1122 PM CST SUN MAR 11 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  NORTHERN OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA
  CREEK COUNTY IN NORTHEAST OKLAHOMA
  OKMULGEE COUNTY IN NORTHEAST OKLAHOMA
  SOUTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  ROGERS COUNTY IN NORTHEAST OKLAHOMA
  TULSA COUNTY IN NORTHEAST OKLAHOMA
  WESTERN WAGONER COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN WASHINGTON COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1215 AM CST

* AT 1121 PM CST SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WINDS 
  UP TO 60 MPH WERE LOCATED ALONG A LINE EXTENDING FROM 2 MILES   
  EAST OF PERSHING TO 5 MILES SOUTH OF MANNFORD TO BOLEY...MOVING   
  EAST AT 40 MPH. WINDS UP TO 60 MPH HAVE BEEN REPORTED WITH THIS
  LINE OF STORMS NEAR HOMINY AT 1118 PM. 

* SOME LOCATIONS AFFECTED INCLUDE... SAPULPA...KELLYVILLE...
  MANNFORD...KIEFER...MOUNDS...DEPEW...SLICK...BRISTOW...ONETA...
  COWETA...STONEBLUFF...OCHELATA...RAMONA...VERA...BROKEN ARROW...
  COLLINSVILLE...SKIATOOK...SPERRY...GLENPOOL...OWASSO...JENKS...
  BIXBY...SAND SPRINGS...TULSA...BARNSDALL...WYNONA...AVANT...
  HOMINY...BALD HILL...BEGGS...PRESTON...MORRIS...SCHULTER...
  OKMULGEE...WELTY...OKFUSKEE...PADEN...TALALA...OOLOGAH...FOYIL...
  TIAWAH...VERDI4GRIS...CATOOSA...INOLA AND CLAREMORE.

LAT...LON 3666 9638 3605 9644 3549 9661 3551 9578
          3602 9555 3659 9545

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 Mar 11, 9:22 PM CST, 2 hours earlier.

Area forecast discussion, Mar 11, 9:22 PM CST, 2 hours before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
922 PM CST SUN MAR 11 2001

APPEARS TO BE A BREAK IN THE RAIN OVER MUCH OF THE AREA AT THIS
TIME.  EVEN SO...HIGH POPS IN CURRENT FORECAST SEEM WARRANTED AS A
LINE OF SHOWERS AND THUNDERSTORMS IS HEADED INTO CENTRAL OKLAHOMA.
COULD BE SOME STRONG STORMS ACROSS THE AREA BUT BELIEVE THE BEST
CHANCE FOR SEVERE STORMS WILL BE TO THE WEST AND SOUTH OF THE
FORECAST AREA.

TEMPS IN FORECAST AREA SHOULD NOT CHANGE MUCH TONIGHT GIVEN THE
CLOUDS...SOUTH WINDS AND DEW POINTS IN THE UPPER 40S TO MID 50S.

CURRENT FORECAST HAS THINGS WELL IN HAND AND WILL NOT UPDATE AT THIS
TIME.

.TSA...
AR...NONE.
OK...NONE.

ABBAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 11, 11:22 PM CST	Severe Thunderstorm Warning	TSA	Rogers, Wagoner, Washington	53 min
Mar 11, 11:59 PM CST	Severe Thunderstorm Warning	TSA	Mayes, Muskogee, Rogers, Wagoner	61 min
Mar 11, 11:59 PM CST	Severe Thunderstorm Warning	TSA	Craig, Nowata	61 min
Mar 12, 12:29 AM CST	Severe Thunderstorm Warning	TSA	Cherokee, Delaware	61 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2001 Every 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.