Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 166, NWS Tulsa, OK

May 20, 2001Latimer County, Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 20, 2001, 10:13 PM CDT for Latimer County, Pushmataha County, Oklahoma. It was in force for 62 min. 2 reports 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 20, 2001, 10:13 PM CDT (03:13 UTC)
Expired
May 20, 2001, 11:15 PM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Latimer County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 112 km from the middle of the area, began a volume at 03:14 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

TimeReportWhereRemark
May 20, 10:30 PM CDTHail 1Red Oak, OK
May 20, 10:30 PM CDTThunderstorm Wind 61 EWilburton, 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.

IssuedProductOfficeLasted
May 20, 9:00 PM CDTTornado WatchSPC2 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.2 hours before the alert went out and 201 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2001-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2068 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2001-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2068 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1431 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
1.3
Supercell composite
13.3

Open this sounding in Storm Lab

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 20, 9:50 PM CDT, 23 minutes earlier.

Area forecast discussion, May 20, 9:50 PM CDT, 23 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
950 PM CDT SUN MAY 20 2001

UPDATED FORECAST A WHILE AGO TO ADJUST FOR NEW TOR WATCH WHICH
REPLACED EXPIRED WATCHES IN ERN OK. MAY CLEAR SOME NE OK COUNTIES
SOON. DROPPED POPS IN A FEW NORTH AND WEST COUNTIES. RAISED MIN
TEMPS A DEGREE OR TWO BUT FRONT NOW IN CENTRAL KS...SHOULD MAKE IT
TO NE OK BEFORE 12Z. A FEW ISOLATED TSRA IN SE KS BUT NOT EXPECTED
TO INCREASE IN COVERAGE. STILL LOOKS VERY COOL TOMORROW.

FCSTID = 26

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

In the hours before

Local storm report, May 20, 9:30 PM CDT, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
930 PM CDT SUN MAY 20 2001

...CUMULATIVE REPORTS FOR THE DAY THROUGH 930 PM CDT...

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

0850 AM    WISTER                    OK    WIND DAMAGE
05/20/01   LE FLORE                        ROOFS BLOWN OFF SEVERAL
                                           BUILDINGS. TREES DOWN
                                           JUST NORTH OF WISTER.
                                           REPORTED BY EMERGENCY
                                           MANAGEMENT.

0450 PM    5 NW HANNA                OK    TORNADO
05/20/01   MCINTOSH                        DAMAGE REPORTED AT
                                           INDIAN NATION TURNPIKE
                                           TOLL BOOTH.

0522 PM    2 S STIDHAM               OK    TORNADO
05/20/01   MCINTOSH                        SAME
                                           TORNADO...CONTINUING ENE

0535 PM    7 SW BURBANK              OK    67 MPH TSTM GUST
05/20/01   OSAGE                           MESONET MEASUREMENT

0548 PM    VIVIAN                    OK    1.75 INCH HAIL
05/20/01   MCINTOSH

0550 PM    2 N BROKEN ARROW          OK    1 INCH HAIL
05/20/01   TULSA

0556 PM    2 N FAIRFAX               OK    1 INCH HAIL
05/20/01   OSAGE                           REPORTED BY POLICE DEPT

0607 PM    SAND SPGS                 OK    1.75 INCH HAIL
05/20/01   TULSA                           AMATEUR RADIO REPORT

0630 PM    1 S PAWHUSKA              OK    TORNADO
05/20/01   OSAGE                           AMATEUR RADIO REPORT

0639 PM    5 W PAWHUSKA              OK    65 MPH TSTM GUST
05/20/01   OSAGE                           ESTIMATE BY AMATEUR RADIO

0654 PM    1 NW STIGLER              OK    TORNADO
05/20/01   HASKELL                         EMERGENCY MGMT REPORT

0655 PM    WHITEFIELD                OK    .75 INCH HAIL
05/20/01   HASKELL                         EMERGENCY MGMT REPORT

0655 PM    3 WNW STIGLER             OK    92 MPH TSTM GUST
05/20/01   HASKELL                         MESONET MEASUREMENT

0657 PM    STIGLER                   OK    TORNADO
05/20/01   HASKELL                         TV CHASE TEAM REPORTED
                                           20 SECOND TOUCHDOWN

0721 PM    VERA                      OK    .88 INCH HAIL
05/20/01   WASHINGTON                      AMATEUR RADIO REPORT

0755 PM    2 W SPIRO                 OK    TORNADO
05/20/01   LE FLORE                        EMERGENCY MGMT REPORT

0755 PM    ASHLAND                   OK    1.75 INCH HAIL
05/20/01   PITTSBURG                       PUBLIC REPORT

0802 PM    FT SMITH                  AR    4.5 INCH HAIL
05/20/01   SEBASTIAN                       EMERGENCY MGMT REPORT

0813 PM    4 S LOCUST GROVE          OK    .75 INCH HAIL
05/20/01   MAYES                           EMER MGMT REPORT

0817 PM    FT CHAFFEE                AR    1.75 INCH HAIL
05/20/01   SEBASTIAN                       EMER MGMT REPORT

0835 PM    PEGGS                     OK    .88 INCH HAIL
05/20/01   CHEROKEE                        EMER MGMT REPORT

0851 PM    4 NE CLIFTY               AR    TORNADO
05/20/01   MADISON                         REPORTED BY CARROLL
                                           COUNTY LAW ENF

0851 PM    3 W BRANCH                AR    TORNADO
05/20/01   FRANKLIN                        EMER MGMT REPORT

0904 PM    BRANCH                    AR    1 INCH HAIL
05/20/01   FRANKLIN                        EMER MGMT REPORT

0920 PM    3 S HEAVENER              OK    .75 INCH HAIL
05/20/01   LE FLORE                        EMER MGMT REPORT
Local storm report, May 20, 9:33 PM CDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
933 PM CDT SUN MAY 20 2001

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

0850 AM    WISTER                    OK    WIND DAMAGE
05/20/01   LE FLORE                        ROOFS BLOWN OFF SEVERAL
                                           BUILDINGS. TREES DOWN
                                           JUST NORTH OF WISTER.
                                           REPORTED BY EMERGENCY
                                           MANAGEMENT.

0450 PM    5 NW HANNA                OK    TORNADO
05/20/01   MCINTOSH                        DAMAGE REPORTED AT
                                           INDIAN NATION TURNPIKE
                                           TOLL BOOTH.

0522 PM    2 S STIDHAM               OK    TORNADO
05/20/01   MCINTOSH                        SAME
                                           TORNADO...CONTINUING ENE

0535 PM    7 SW BURBANK              OK    67 MPH TSTM GUST
05/20/01   OSAGE                           MESONET MEASUREMENT

0548 PM    VIVIAN                    OK    1.75 INCH HAIL
05/20/01   MCINTOSH

0550 PM    2 N BROKEN ARROW          OK    1 INCH HAIL
05/20/01   TULSA

0556 PM    2 N FAIRFAX               OK    1 INCH HAIL
05/20/01   OSAGE                           REPORTED BY POLICE DEPT

0607 PM    SAND SPGS                 OK    1.75 INCH HAIL
05/20/01   TULSA                           AMATEUR RADIO REPORT

0630 PM    1 S PAWHUSKA              OK    TORNADO
05/20/01   OSAGE                           AMATEUR RADIO REPORT

0639 PM    5 W PAWHUSKA              OK    65 MPH TSTM GUST
05/20/01   OSAGE                           ESTIMATE BY AMATEUR RADIO

0654 PM    1 NW STIGLER              OK    TORNADO
05/20/01   HASKELL                         EMERGENCY MGMT REPORT

0655 PM    WHITEFIELD                OK    .75 INCH HAIL
05/20/01   HASKELL                         EMERGENCY MGMT REPORT

0655 PM    3 WNW STIGLER             OK    92 MPH TSTM GUST
05/20/01   HASKELL                         MESONET MEASUREMENT

0657 PM    STIGLER                   OK    TORNADO
05/20/01   HASKELL                         TV CHASE TEAM REPORTED
                                           20 SECOND TOUCHDOWN

0721 PM    VERA                      OK    .88 INCH HAIL
05/20/01   WASHINGTON                      AMATEUR RADIO REPORT

0755 PM    2 W SPIRO                 OK    TORNADO
05/20/01   LE FLORE                        EMERGENCY MGMT REPORT

0755 PM    ASHLAND                   OK    1.75 INCH HAIL
05/20/01   PITTSBURG                       PUBLIC REPORT

0802 PM    FT SMITH                  AR    4.5 INCH HAIL
05/20/01   SEBASTIAN                       EMERGENCY MGMT REPORT

0813 PM    4 S LOCUST GROVE          OK    .75 INCH HAIL
05/20/01   MAYES                           EMER MGMT REPORT

0817 PM    FT CHAFFEE                AR    1.75 INCH HAIL
05/20/01   SEBASTIAN                       EMER MGMT REPORT

0835 PM    PEGGS                     OK    .88 INCH HAIL
05/20/01   CHEROKEE                        EMER MGMT REPORT

0851 PM    4 NE CLIFTY               AR    TORNADO
05/20/01   MADISON                         REPORTED BY CARROLL
                                           COUNTY LAW ENF

0851 PM    3 W BRANCH                AR    TORNADO
05/20/01   FRANKLIN                        EMER MGMT REPORT

0904 PM    BRANCH                    AR    1 INCH HAIL
05/20/01   FRANKLIN                        EMER MGMT REPORT

0920 PM    3 S HEAVENER              OK    .75 INCH HAIL
05/20/01   LE FLORE                        EMER MGMT REPORT
Local storm report, May 20, 9:51 PM CDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT...UPDATED TO INCLUDE DAMAGE REPORT
NATIONAL WEATHER SERVICE TULSA OK
951 PM CDT SUN MAY 20 2001

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

0657 PM    STIGLER                   OK    TORNADO
05/20/01   HASKELL                         TV CHASE TEAM REPORT.
                                           18 BUILDINGS DAMAGED...
                                            1 BUSINESS DESTROYED...
                                           1 HOME DESTROYED
Local storm report, May 20, 9:54 PM CDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
954 PM CDT SUN MAY 20 2001

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

0930 PM    6 S MANSFIELD             AR    60 MPH TSTM GUST
05/20/01   SEBASTIAN                       ESTIMATED BY SPOTTER
Local storm report, May 20, 9:54 PM CDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE TULSA OK
954 PM CDT SUN MAY 20 2001

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

0657 PM    STIGLER                   OK    TORNADO
05/20/01   HASKELL                         TV CHASE TEAM REPORT.
                                           18 BUILDINGS DAMAGED...
                                           1 BUSINESS DESTROYED...
                                           1 HOME DESTROYED
Local storm report, May 20, 9:56 PM CDT, 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
956 PM CDT SUN MAY 20 2001

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

0930 PM    6 S MANSFIELD             AR    60 MPH TSTM GUST
05/20/01   SEBASTIAN                       ESTIMATED BY SPOTTER

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 7:00 PM CDTTornado WarningTSAPittsburg60 min
May 20, 7:06 PM CDTSevere Thunderstorm WarningTSANowata54 min
May 20, 7:12 PM CDTTornado WarningTSALeFlore, Sequoyah63 min
May 20, 7:16 PM CDTTornado WarningTSAHaskell44 min
May 20, 7:17 PM CDTSevere Thunderstorm WarningTSAOttawa28 min
May 20, 7:20 PM CDTTornado WarningTSALatimer55 min
May 20, 7:23 PM CDTSevere Thunderstorm WarningTSARogers67 min
May 20, 7:30 PM CDTSevere Thunderstorm WarningTSATulsa, Washington45 min
May 20, 7:32 PM CDTSevere Thunderstorm WarningTSACraig43 min
May 20, 7:39 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee51 min
May 20, 7:43 PM CDTTornado WarningTSAPittsburg62 min
May 20, 7:48 PM CDTSevere Thunderstorm WarningTSAWagoner42 min
May 20, 8:08 PM CDTSevere Thunderstorm WarningTSACherokee67 min
May 20, 8:09 PM CDTSevere Thunderstorm WarningTSAMcIntosh51 min
May 20, 8:19 PM CDTTornado WarningTSALatimer, LeFlore56 min
May 20, 8:27 PM CDTSevere Thunderstorm WarningTSAMayes63 min
May 20, 8:34 PM CDTSevere Thunderstorm WarningTSAMuskogee26 min
May 20, 8:46 PM CDTSevere Thunderstorm WarningTSAHaskell44 min
May 20, 9:00 PM CDTTornado WarningTSALeFlore60 min
May 20, 9:19 PM CDTSevere Thunderstorm WarningTSALatimer41 min
May 20, 9:50 PM CDTSevere Thunderstorm WarningTSAHaskell40 min
May 20, 9:59 PM CDTSevere Thunderstorm WarningTSALeFlore46 min
May 20, 10:04 PM CDTSevere Thunderstorm WarningTSAMuskogee56 min
May 20, 10:25 PM CDTSevere Thunderstorm WarningTSALatimer50 min
May 20, 10:39 PM CDTSevere Thunderstorm WarningTSAMcIntosh51 min
May 20, 10:46 PM CDTSevere Thunderstorm WarningTSALeFlore59 min
May 20, 10:52 PM CDTFlash Flood WarningTSAHaskell, LeFlore, Sequoyah113 min
May 20, 11:06 PM CDTSevere Thunderstorm WarningTSAPittsburg54 min
May 20, 11:07 PM CDTSevere Thunderstorm WarningTSALeFlore38 min
May 20, 11:31 PM CDTSevere Thunderstorm WarningTSAHaskell44 min
May 20, 11:45 PM CDTSevere Thunderstorm WarningTSALeFlore45 min
May 20, 11:50 PM CDTSevere Thunderstorm WarningTSALatimer55 min
May 20, 11:56 PM CDTSevere Thunderstorm WarningTSAPittsburg49 min
May 21, 12:03 AM CDTTornado WarningTSALeFlore27 min
May 21, 12:45 AM CDTSevere Thunderstorm WarningTSAPittsburg, Pushmataha45 min
May 21, 1:28 AM CDTSevere Thunderstorm WarningTSAPushmataha62 min
May 21, 2:26 AM CDTSevere Thunderstorm WarningTSAPushmataha64 min
May 21, 2:29 AM CDTFlash Flood WarningTSAPushmataha3 hr

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.