Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 238, NWS Tulsa, OK

May 30, 2001Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 30, 2001, 9:15 PM CDT for Pushmataha 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, 9:15 PM CDT (02:15 UTC)
Expired: May 30, 2001, 10:00 PM CDT
In force: 45 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 98 km from the middle of the area, began a volume at 02:15 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

Time	Report	Where	Remark
May 30, 9:30 PM CDT	Tornado F0	Yanush, OK	An F0 tornado touched down briefly just southeast of Yanush. No damage was reported.

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 30, 9:00 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.3 hours before the alert went out and 212 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: 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 310215
SVRTUL
OKC127-310300-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1000 PM CDT

* AT 915 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 6 MILES NORTH OF ALBION TO 4 MILES EAST OF
  YANUSH TO 3 MILES SOUTHWEST OF YANUSH...MOVING SOUTHEAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...ALBION...
  KIAMICHI...TUSKAHOMA AND YANUSH.

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

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

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

LAT...LON 3483 9508 3476 9532 3469 9541 3441 9512
          3468 9495 3468 9504

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, 4:05 PM CDT, 5 hours 10 minutes earlier.

Area forecast discussion, May 30, 4:05 PM CDT, 5 hours 10 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
405 PM CDT WED MAY 30 2001

...ADDED TORNADO WATCH 329 TO SE OK ZONES...

...ROUTINE ISSUANCE OUT SHORTLY...

COMPLEX THAT BROUGHT RAIN TO MUCH OF THE AREA EARLIER WAS
DIMINISHING AS IT PUSHES EAST INTO CENTRAL AR. OTHER ACTIVITY WAS
OCCURRING ACROSS CENTRAL/ERN KS IN ASSOCIATION WITH THE UPPER LOW.

AS FOR ADDITIONAL CONVECTION ACROSS OUR AREA... MAIN FOCUS FOR SRN
ZONES WILL BE OUTFLOW BOUNDARY CURRENTLY SITUATED OVER SRN OK IN THE
VICINITY OF THE RED RIVER. SURFACE LOW WAS LOCATED ACROSS NE
KS...WITH ATTENDANT COLD FRONT EXTENDING INTO CENTRAL AND SOUTHWEST
OK. THIS FRONT LOOKS TO OFFER A CHANCE OF ADDITIONAL STORMS ACROSS
AREAS NORTH OF I-40...THOUGH INSTABILITIES HAVE BEEN HAMPERED
SOMEWHAT DUE TO CLOUD COVER. LIS IN THE -10 TO -12 HAVE BEEN NOTED
ACROSS NRN TX IN AREAS THAT HAVE BENEFITED FROM AFTERNOON SUN. STILL
PLENTY OF INSTABILITY ACROSS SE OK TO KEEP MENTION OF SVR IN ZONES
TONIGHT. AVN AND ETA ARE IN AGREEMENT WITH REGARDS TO S/W DROPPING
SE FROM CO AND SWINGING ACROSS TX OVERNIGHT. HEAVIEST RAINS
OVERNIGHT SHOULD BE CONFINED TO FAR SRN OK AND NRN TX WHERE UPPER
SUPPORT WILL BE MAXIMIZED. DESPITE LOW FFG VALUES...WILL HOLD OFF ON
ISSUING FFA FOR NOW ACROSS NE OK/FAR NW AR WITH HEAVY RAIN THREAT
TO THE SOUTH.

SFC FRONT AND S/W PUSH OFF TO THE EAST TOMORROW AS SFC HIGH PRESSURE
QUICKLY SETTLES OVER THE AREA. NEXT CHANCE FOR STORMS APPEARS TO BE
FRIDAY. WINDS SHIFT AROUND TO THE SW ON FRI OUT AHEAD OF A SFC FRONT
THAT APPROACHES FORM THE NORTH LATE IN THE AFTERNOON FRIDAY. LAPSE
RATES WILL BE STEEP BY FRIDAY AFTERNOON AS H5 VORT AND ASSOCIATED
COLD AIR POCKET BRUSH THE AREA. WILL KEEP SAT AND SUN DRY...BUT WILL
ADD SLIGHT CHANCE FOR STORMS ON MONDAY AS 12Z AVN HAS FOLLOWED 00Z
MRF WITH AN APPROACHING COLD FRONT AND S/W. SFC HIGH SETTLES IN
BEHIND FRONT...SO DRY WX IN STORE FOR TUES-WED.

FCSTID = 23

.PRELIMINARY NUMBERS...
TUL   60  78  58  83 /  40  10   0   0
FSM   62  82  59  86 /  50  20   0   0
MLC   62  80  58  85 /  50  20   0   0
BVO   59  78  55  83 /  40  10   0   0
FYV   60  75  50  81 /  50  10   0   0
BYV   60  75  50  80 /  50  10   0   0
MIO   60  75  53  81 /  40  10   0   0
MKO   61  78  59  83 /  40  10   0   0
F10   61  79  58  84 /  40  10   0   0
HHW   62  81  59  85 /  50  20   0   0

.TSA...
AR...NONE.
OK...TORNADO WATCH UNTIL 900 PM CDT WEDNESDAY FOR ZONES
OKZ049...OKZ053...OKZ073...OKZ075>076.

In the hours before

Local storm report, May 30, 7:51 PM CDT, 1 hour 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, 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

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 7:31 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	44 min
May 30, 7:58 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg	47 min
May 30, 8:40 PM CDT	Tornado Warning	TSA	Pittsburg	50 min
May 30, 8:42 PM CDT	Tornado Warning	TSA	Latimer	48 min
May 30, 9:11 PM CDT	Flash Flood Warning	TSA	Pittsburg	3 hr
May 30, 9:26 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	49 min
May 30, 9:28 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	47 min
May 30, 9:50 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	40 min
May 30, 9:59 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	46 min
May 30, 10:15 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	45 min
May 30, 10:25 PM CDT	Flash Flood Warning	TSA	Pushmataha	3 hr
May 30, 10:38 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	52 min
May 30, 10:58 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	47 min
May 31, 12:02 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	43 min
May 31, 12:23 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	52 min
May 31, 12:56 AM CDT	Flash Flood Warning	TSA	Pushmataha	3 hr

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.