Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 320, NWS Tulsa, OK

August 10, 2001McIntosh County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 10, 2001, 4:03 PM CDT for McIntosh County, Oklahoma. It was in force for 42 min. No storm report in the archive falls 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.

The facts

Issued: Aug 10, 2001, 4:03 PM CDT (21:03 UTC)
Expired: Aug 10, 2001, 4:45 PM CDT
In force: 42 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County McIntosh County, OK

The radar

The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 21:05 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.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.1 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-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: 343 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 1575 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: -119 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.

919 
WUUS54 KTSA 102103
SVRTUL
OKC091-102145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
403 PM CDT FRI AUG 10 2001

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 445 PM CDT

* AT 403 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES NORTHWEST OF EUFAULA...MOVING EAST AT 5 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...EUFAULA.

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

LAT...LON 3540 9570 3526 9570 3532 9539 3546 9544

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 Aug 10, 3:30 PM CDT, 33 minutes earlier.

Area forecast discussion, Aug 10, 3:30 PM CDT, 33 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
330 PM CDT FRI AUG 10 2001

THUNDERSTORMS DEVELOPING ACROSS THE CWA AT THIS TIME.  TEMPERATURES
CLIMBED QUITE NICELY TODAY AS SKIES REMAINED PARTLY CLOUDY INSTEAD
OF MOSTLY CLOUDY.  FRONT STALLED ACROSS NORTHERN PORTION OF CWA
DURING THE AFTERNOON HOURS.

FRONT POSITION SHOULD REMAIN ACROSS THE CWA TONIGHT MOVING A LITTLE
FURTHER SOUTH.  THIS WILL KEEP CHANCE POPS GOING FOR TONIGHT INTO
TOMORROW.  FRONTAL POSITION AND CLOUDS WILL REALLY PLAY INTO
TEMPERATURE FORECAST NEXT COUPLE OF DAYS AS WELL.  DRYING MOVING
INTO THE AREA ON SUNDAY FROM THE NORTH SO WILL BEGIN TO DRY THINGS
OUT.

EXTENDED STILL LOOKS DRY UNTIL THURSDAY INTO FRIDAY AS NEXT FRONTAL
SYSTEM MOVES SOUTH INTO THE AREA.  WILL INTRODUCE POPS ON FRIDAY FOR
NOW AS IT APPEARS TO BE THE MORE LIKELY DAY AT THIS TIME.

HOWIESON
FCSTID = 44

...PRELIMINARY NUMBERS CHANGES LIKELY...
TUL   70  92  71  93 /  30  30  20  20
FSM   71  93  71  95 /  40  40  30  20
MLC   71  94  72  94 /  40  40  30  20
BVO   66  89  67  90 /  30  30  20  10
FYV   65  87  66  89 /  30  30  20  20
BYV   65  87  66  89 /  30  30  20  20
MIO   67  88  67  87 /  30  30  20  20
MKO   70  92  71  93 /  30  30  20  20
F10   70  92  71  93 /  30  30  20  20
HHW   75  97  74  96 /  40  40  30  30

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

In the hours before

Local storm report, Aug 10, 1:08 PM CDT, 2 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
108 PM CDT FRI AUG 10 2001

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

0740 PM    1 N BLUEJACKET            OK    WIND DAMAGE
08/09/01   CRAIG                           TRAILER HOUSE ELEVATED
                                           FOR TRANSPORTING ROLLED
                                           OVER AND TREE DAMAGE
                                           RPTD BY EM.

TL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 3:02 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee	43 min
Aug 10, 3:08 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	52 min
Aug 10, 3:32 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	43 min
Aug 10, 4:41 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	49 min
Aug 10, 5:55 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	35 min
Aug 10, 6:12 PM CDT	Flash Flood Warning	TSA	Okfuskee	93 min
Aug 10, 6:26 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	49 min
Aug 10, 6:58 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.