Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 243, NWS Tulsa, OK

May 30, 2001Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 30, 2001, 10:15 PM CDT for Pittsburg County, Oklahoma. It was in force for 45 min. 1 report 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
May 30, 2001, 10:15 PM CDT (03:15 UTC)
Expired
May 30, 2001, 11:00 PM CDT
In force
45 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Pittsburg County, OK

The radar

The Western Arkansas radar (KSRX), 140 km from the middle of the area, began a volume at 03:15 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 30, 10:45 PM CDTHail 0.75Kiowa, 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 30, 9:00 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.3 hours before the alert went out and 165 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 2001-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3451 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2001-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.193958Sfc1 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
3451 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1129 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.9
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 310316
SVRTUL
OKC121-310400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1015 PM CDT WED MAY 30 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1100 PM CDT

* AT 1015 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 21 MILES SOUTHEAST OF BLANCO TO 13 MILES
  SOUTHEAST OF BLANCO TO 10 MILES SOUTHEAST OF KIOWA...MOVING
  SOUTHEAST AT 15 MPH.


HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIOxNS AS STORMS APPROACH.

LAT...LON 3473 9592 3460 9584 3462 9536 3478 9550

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 30, 9:22 PM CDT, 53 minutes earlier.

Area forecast discussion, May 30, 9:22 PM CDT, 53 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
922 PM CDT WED MAY 30 2001

NEW SEVERE THUNDERSTORM WATCH JUST ISSUED FOR SE OK VALID UNTIL 100
AM.  THIS REPLACES THE TORNADO WATCH.

ISOLATED SUPERCELLS CONTINUE ALONG/JUST N OF OUTFLOW BOUNDARY ACROSS
SE OK.  DIRECTIONAL SHEAR REMAINS MARGINAL...BUT DEGREE OF
INSTABILITY WILL SUPPORT SEVERE STORMS FOR THE NEXT SEVERAL HOURS.
STORMS ARE SHOWING A GRADUAL SEWD DRIFT WHICH WILL PUT THEM INTO FAR
SE OK LATER THIS EVENING.

ISOLATED ACTIVITY FARTHER N ALONG COLD FRONT HAS BEEN MARGINALLY
SEVERE.

UPDATED ZONES OUT ASAP.

FCSTID = 18

.TSA...
AR...NONE.
OK...SEVERpE THUNDERSTORM WATCH UNTIL 100 AM CDT THURSDAY FOR ZONES
OKZ049...OKZ053...OKZ072>076.

In the hours before

Local storm report, May 30, 7:51 PM CDT, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
751 PM CDT WED MAY 30 2001

....DELAYED REPORTS....

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

1140 PM    BURBANK                   OK    WIND DAMAGE
05/29/01   OSAGE                           LARGE TREE LIMBS BROKEN

1150 PM    FORAKER                   OK    60 MPH TSTM GUST
05/29/01   OSAGE

1150 PM    FORAKER                   OK    1 INCH HAIL
05/29/01   OSAGE

0500 AM    6 SSW PETTIT              OK    FLOOD
05/30/01   CHEROKEE                        INDIAN ROAD FLOODED

0908 AM    BOX                       OK    FLOOD
05/30/01   SEQUOYAH                        FLOODED ROADS VCNTY BOX

0915 AM    HENRYETTA                 OK    FLOOD
05/30/01   OKMULGEE                        MANY AREA ROADS

0925 AM    OKEMAH                    OK    FLOOD
05/30/01   OKFUSKEE                        AREA ROADS
Local storm report, May 30, 9:06 PM CDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
906PM CDT WED MAY 30 2001

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

0825 PM    1 N HIGGINS               OK    1 INCH HAIL
05/30/01   LATIMER                         EMERGENCY MANAGEMENT
                                           REPORT

0845 PM    6 S WILBURTON             OK    1.75 INCH HAIL
05/30/01   LATIMER                         EMERGENCY MANAGEMENT
                                           REPORT

DRM
Local storm report, May 30, 9:33 PM CDT, 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
933 PM CDT WED MAY 30 2001

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

0825 PM    1 N HIGGINS               OK    1 INCH HAIL
05/30/01   LATIMER                         REPORTED BY WILBURTON
                                           EOC.

0845 PM    6 S WILBURTON             OK    1.75 INCH HAIL
05/30/01   LATIMER                         REPORTED BY WILBURTON
                                           EOC.

0850 PM    KIOWA                     OK    1.25 INCH HAIL
05/30/01   PITTSBURG                       REPORTED BY MCALESTER
                    q                       EOC.

DRM
Local storm report, May 30, 9:54 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
954 PM CDT WED MAY 30 2001

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

0930 PM    1 SE YANUSH               OK    TORNADO
05/30/01   LATIMER                         BRIEF TOUCHDOWN.
                                           EMERGENCY MANAGEMENT
                                           REPORT.

DRM
Local storm report, May 30, 10:06 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1006 PM CDT WED MAY 30 2001

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....
g
0950 PM    BLANCO                    OK    .75 INCH HAIL
05/30/01   PITTSBURG                       PUBLIC REPORT

DRM

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 7:31 PM CDTSevere Thunderstorm WarningTSALatimer, Pittsburg44 min
May 30, 7:58 PM CDTTornado WarningTSALatimer, Pittsburg47 min
May 30, 8:40 PM CDTTornado WarningTSAPittsburg50 min
May 30, 8:42 PM CDTTornado WarningTSALatimer48 min
May 30, 9:11 PM CDTFlash Flood WarningTSAPittsburg3 hr
May 30, 9:15 PM CDTSevere Thunderstorm WarningTSAPushmataha45 min
May 30, 9:26 PM CDTSevere Thunderstorm WarningTSAHaskell49 min
May 30, 9:28 PM CDTSevere Thunderstorm WarningTSALatimer, Pittsburg47 min
May 30, 9:50 PM CDTSevere Thunderstorm WarningTSASequoyah40 min
May 30, 9:59 PM CDTSevere Thunderstorm WarningTSAPushmataha46 min
May 30, 10:25 PM CDTFlash Flood WarningTSAPushmataha3 hr
May 30, 10:38 PM CDTSevere Thunderstorm WarningTSAPushmataha52 min
May 30, 10:58 PM CDTSevere Thunderstorm WarningTSAPittsburg47 min
May 31, 12:02 AM CDTSevere Thunderstorm WarningTSAPushmataha43 min
May 31, 12:23 AM CDTSevere Thunderstorm WarningTSAPushmataha52 min
May 31, 12:56 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.