Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 451, NWS Tulsa, OK

May 30, 2001Okfuskee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 30, 2001, 5:47 AM CDT for Okfuskee County, Oklahoma. It was in force for 43 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 30, 2001, 5:47 AM CDT (10:47 UTC)
Expired: May 30, 2001, 6:30 AM CDT
In force: 43 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Okfuskee County, OK

What was reported inside it

Time	Report	Where	Remark
May 30, 5:49 AM CDT	Hail 1.75	Bearden, OK	Golfball size hail fell and damaged cars and roofs of homes.

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, 10.8 hours before the alert went out and 101 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: 1017 J/kg
Mixed-layer CIN: -336 J/kg
Mixed-layer LCL: 966 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 424 m²/s²
0-3 km storm-relative helicity: 670 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 301047
SVRTUL
OKC107-301130-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 630 AM CDT

* AT 547 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES SOUTH OF OKEMAH...MOVING EAST AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...PHAROAH...
  CLEARVIEW...BEARDEN...WELEETKA AND OKEMAH.

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

LAT...LON 3544 9643 3526 9637 3532 9599 3555 9609

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, 5:10 AM CDT, 37 minutes earlier.

Area forecast discussion, May 30, 5:10 AM CDT, 37 minutes before

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

ZONES ALREADY SENT. MODELS ARE OF VERY LITTLE HELP THIS MORNING
AS NONE OF THEM ARE HANDLING THE ONGOING COMPLEX VERY WELL. 06Z ETA
SEEMS TO HAVE THE BEST HANDLE AS IS TO BE EXPECTED SO WILL BASE THE
FORECAST MAINLY ON THIS SOLUTION.

HAVE CANCELLED THE FLASH FLOOD WATCH FOR THIS MORNING AS THE
HEAVIEST RAINS ARE SHIFTING SOUTH OF THE WATCH AREA AND
REDEVELOPMENT OF HEAVY RAIN IS NOT EXPECTED THIS MORNING. COMPLEX
APPEARS TO BE ON A DOWNWARD SLIDE NOW AND EXPECT THIS TO CONTINUE
WITH THE ACTIVITY ON THE WESTERN END OF THE COMPLEX LIKELY TO
MAINTAIN ITSELF THE BEST THE NEXT SEVERAL HOURS.

BIG QUESTION IS HOW MUCH AIRMASS RECOVERY WE WILL SEE TODAY. 06Z ETA
SUGGESTS SOME CLEARING LATER THIS MORNING AND AFTERNOON BEHIND THE
COMPLEX RESULTING IN SIGNIFICANT DESTABILIZATION. OUTFLOW BOUNDARY
FROM THE CURRENT COMPLEX IS LIKELY TO RESIDE IN SOUTHEAST OKLAHOMA
THIS AFTERNOON AND WILL PROVIDE THE FOCUS FOR THE MOST VOLATILE
DEVELOPMENT THIS AFTERNOON. WIND PROFILES WILL BE FAVORABLE FOR
TORNADIC SUPERCELLS NEAR THE OUTFLOW BOUNDARY WHERE LOW LEVEL FLOW
WILL BE MAXIMIZED. WILL LIKELY SEE SCATTERED DEVELOPMENT FURTHER
NORTH ALONG THE COLD FRONT SO WILL NEED TO KEEP POPS IN ALL DAY.
SOME OF THESE STORMS MAY ALSO BE SEVERE BUT THE BEST ACTION WILL BE
IN THE SOUTH SO WILL ONLY MENTION SEVERE IN THAT AREA.

AFTERNOON STORMS LIKELY TO ONCE AGAIN ORGANIZE INTO A MESOSCALE
CONVECTIVE COMPLEX THIS EVENING WITH MOST OF THE ACTIVITY SHIFTING
SOUTH AND EAST OF THE FORECAST AREA AFTER MIDNIGHT. COLD FRONT WILL
MOVE THROUGH BY EARLY THURSDAY ENDING ALL RAIN CHANCES AND USHERING
IN DRIER AIR. MAY SEE SOME STRATOCUMULUS AROUND THURSDAY SO KEPT
SKIES PARTLY CLOUDY.

AVN AND ETA EXTENSION BOTH SWING A STRONG VORT LOBE AROUND THE
BACKSIDE OF THE DEEPENING UPPER MIDWEST CLOSED UPPER LOW FRIDAY.
FRONTOGENESIS WILL OCCUR WITH LOW LEVEL FLOW BACKING TO THE
SOUTHWEST AND WEST AHEAD OF THE FRONT DURING THE DAY FRIDAY.
ALTHOUGH SURFACE DEWPOINTS WILL GENERALLY REMAIN IN THE 50S TO
AROUND 60...COLD TEMPERATURES ALOFT WILL COMBINE WITH STRONG
INSOLATION AT THE SURFACE (TEMPERATURES WARMING WELL INTO THE 80S)
TO CREATE AT LEAST A MODERATELY UNSTABLE AIRMASS AHEAD OF THE FRONT.
EXPECT SCATTERED TO BROKEN CONVECTION TO DEVELOP ALONG THE FRONT BY
LATE AFTERNOON AND ADVANCE SOUTHEAST ACROSS THE FORECAST AREA.
SEVERE STORMS LOOK TO BE A GOOD BET ONCE AGAIN WITH THIS EVENT.

COOLDOWN BEHIND THIS FRONT WILL BE VERY BRIEF WITH RETURN FLOW
ALREADY SETTING UP BY SATURDAY AFTERNOON. WILL KEEP THINGS DRY
SATURDAY THROUGH TUESDAY WITH A WARMING TREND PER ECMWF AND MOST
OTHER MEDIUM RANGE MODELS AND DISCARD THE MRF WHICH IS THE BIG
OUTLIER AMONG THE MODELS.

WENT WARMER THAN GUIDANCE FOR MAXIMUMS TODAY WITH SOME SUNSHINE
EXPECTED BY LATE MORNING AND AFTERNOON THEN STAYED CLOSE TO GUIDANCE
IN THE LATER PERIODS.

FCSTID = 5
TUL   82  60  77  57 /  50  20  10  10
FSM   83  63  80  60 /  70  60  20   0
MLC   86  63  80  60 /  70  50  20   0
BVO   80  57  76  53 /  40  20  10  10
FYV   76  60  75  50 /  70  40  10   0
BYV   76  60  75  50 /  70  40  10   0
MIO   78  59  75  52 /  60  20  10  10
MKO   84  62  78  58 /  70  30  10   0
F10   84  61  78  57 /  50  20  10  10
HHW   88  64  82  62 /  60  70  30  10

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

PLATE

In the hours before

Local storm report, May 30, 1:43 AM CDT, 4 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
143 AM CDT WED MAY 30 2001

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

0145 AM    OWASSO                    OK    WIND DAMAGE
05/30/01   TULSA                           POWER LINES BLOWN DOWN
                                           NEAR OWASSO. SPOTTER
                                           REPORT.

Local storm report, May 30, 1:50 AM CDT, 3 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
150 AM CDT WED MAY 30 2001

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

0144 AM    TULSA                     OK    FLOOD
05/30/01   TULSA                           SPOTTER REPORT OF
                                           HARVARD ALMOST
                                           IMPASSABLE AT 71ST ST
                                           AND 81ST ST.

Local storm report, May 30, 2:38 AM CDT, 3 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
238 AM CDT WED MAY 30 2001

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

0231 AM    KIEFER                    OK    FLOOD
05/30/01   CREEK                           EMERGENCY MANAGEMENT
                                           REPORT OF WATER A FOOT
                                           DEEP OVER HIGHWAY 75.

Local storm report, May 30, 3:08 AM CDT, 2 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
308 AM CDT WED MAY 30 2001

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

0255 AM    BEGGS                     OK    FLOOD
05/30/01   OKMULGEE                        HIGHWAY 16 AND BUSINESS
                                           HIGHWAY 75 UNDERPASSES
                                           CLOSED DUE TO HIGH
                                           WATER.  EMERGENCY
                                           MANAGEMENT REPORT.

0300 AM    COWETA                    OK    FLOOD
05/30/01   WAGONER                         SEVERAL ROADS
                                           IMPASSABLE.  POLICE
                                           DEPARTMENT REPORT.

Special weather statement, May 30, 3:10 AM CDT, 2 hours 37 minutes before

ARZ001-002-010-011-OKZ054>070-301000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
310 AM CDT WED MAY 30 2001

THE TORNADO AND SEVERE THUNDERSTORM WATCHES WHICH HAVE BEEN IN
EFFEC&T FOR MUCH OF NORTHEAST OKLAHOMA AND THE NORTHWEST CORNER OF
ARKANSAS HAVE BEEN CANCELLED. SHOWERS AND THUNDERSTORMS WILL
CONTINUE ACROSS THE AREA EARLY THIS MORNING BUT THE THREAT OF SEVERE
WEATHER HAS DIMINISHED.

Local storm report, May 30, 4:22 AM CDT, 1 hour 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
422 AM CDT WED MAY 30 2001

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

0400 AM    BEARDEN                   OK    1 INCH HAIL
05/30/01   OKFUSKEE                        SHERIFFS OFFICE REPORT.

0400 AM    OKEMAH                    OK    .75 INCH HAIL
05/30/01   OKFUSKEE                        SHERIFFS OFFICE REPORT.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 11:00 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	60 min
May 29, 11:57 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	63 min
May 30, 12:47 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	58 min
May 30, 1:12 AM CDT	Severe Thunderstorm Warning	TSA	Rogers	48 min
May 30, 1:26 AM CDT	Flash Flood Warning	TSA	Creek, Tulsa	3 hr
May 30, 2:07 AM CDT	Flash Flood Warning	TSA	Okmulgee, Wagoner	3 hr
May 30, 2:30 AM CDT	Flash Flood Warning	TSA	Muskogee	3 hr
May 30, 3:15 AM CDT	Flash Flood Warning	TSA	Cherokee	3 hr
May 30, 3:59 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	46 min
May 30, 4:18 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	42 min
May 30, 6:29 AM CDT	Flash Flood Warning	TSA	McIntosh, Muskogee	3 hr
May 30, 6:29 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee	46 min
May 30, 6:36 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	24 min
May 30, 6:49 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	56 min
May 30, 7:04 AM CDT	Severe Thunderstorm Warning	TSA	Latimer	56 min
May 30, 8:58 AM CDT	Flash Flood Warning	TSA	Cherokee, McIntosh, Muskogee, Okfuskee, Okmulgee, Sequoyah	2 hr
May 30, 4:02 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	43 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.