Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 71, NWS Norman, OK

March 7, 2000Pottawatomie County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 7, 2000, 8:16 PM CST for Pottawatomie County, Oklahoma. It was in force for 59 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: Mar 7, 2000, 8:16 PM CST (02:16 UTC)
Expired: Mar 7, 2000, 9:15 PM CST
In force: 59 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Pottawatomie County, OK

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 7, 5:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.3 hours before the alert went out and 39 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: 588 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 290 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 080218
SVROKC
OKC125-080315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
816 PM CST TUE MAR 7 2000

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  POTTAWATOMIE COUNTY IN CENTRAL OKLAHOMA

* UNTIL 915 PM CST

* AT 816 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8
  MILES WEST OF WANETTE...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE ASHER...BROOKSVILLE...MACOMB...
  SHAWNEE...ST. LOUIS...TECUMSEH...TRIBBEY AND WANETTE

HAIL UP TO THE SIZE OF QUARTERS AND WIND GUSTS TO AT LEAST 60 MPH 
ARE LIKELY.

LAT...LON 3511 9713 3494 9711 3499 9688 3514 9679
          3542 9688

CJS

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 7, 3:35 PM CST, 4 hours 41 minutes earlier.

Area forecast discussion, Mar 7, 3:35 PM CST, 4 hours 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
335 PM CST TUE MAR 7 2000

SEVERE WEATHER THREAT SEEMS TO BE WELL-COVERED BY THE MANY SPC
DISCUSSIONS ALREADY ISSUED.  ZONES WILL NATURALLY BE WORDED WITH
SEVERE STORM TERMINOLOGY FOR TONIGHT.

AFTER THE SQUALL LINE PASSES THROUGH TONIGHT... WINDS WILL SHIFT TO
SOUTHWEST AND BEGIN TO INCREASE.  IT APPEARS THAT WINDS TOMORROW
WILL EASILY REACH WIND ADVISORY LEVELS... POSSIBLY EVEN APPROACH
HIGH WIND WARNING SPEEDS IN THE NORTHWEST.  WILL ISSUE A WIND
ADVISORY FOR TOMORROW FOR THE ENTIRE FORECAST AREA... AND LEAVE THE
OPTION OF A HIGH WIND WARNING FOR THE MIDNIGHT SHIFT.

TRANQUIL WEATHER FOLLOWS... WITH THE BRIEF EXCEPTION OF FRIDAY AND
FRIDAY NIGHT... WHEN THERE WILL BE ANOTHER CHANCE OF SHOWERS AND
THUNDERSTORMS.  AT THIS POINT... THAT EVENT LOOKS MUCH LESS POTENT
THAN TONIGHT.

FCSTID = 23 = CMS

OKC   52  70  45  65 /  90   0   0   0
HBR   49  72  42  67 / 100   0   0   0
SPS   52  75  45  72 /  80   0   0   0
GAG   46  68  35  58 / 100  10   0   0
PNC   50  68  42  60 /  90  10  10   0
DUA   53  71  45  73 /  80   0   0   0

.OUN...
OK...WIND ADVISORY ALL ZONES ON WEDNESDAY.
TX...WIND ADVISORY ALL ZONES ON WEDNESDAY.

In the hours before

Special weather statement, Mar 7, 6:37 PM CST, 1 hour 39 minutes before

OKZ007-008-012-013-018>020-024>032-039>043-045>048-050>052-080200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
637 PM CST TUE MAR 7 2000

...SEVERE WEATHER CAN BE EXPECTED THIS EVENING...
AT 630 PM...A LINE OF STRONG TO OCCASIONALLY SEVERE THUNDERSTORMS...
EXTENDED ALONG A LINE FROM BLAINE COUNTY...SOUTHWARD INTO CLAY
COUNTY TEXAS. 60 TO 70 MPH WIND GUSTS...AND NICKEL TO QUARTER SIZE
HAIL HAVE BEEN ASSOCIATED WITH THIS LINE OF STORMS ACROSS WESTERN
OKLAHOMA...AND WESTERN PARTS OF NORTH TEXAS. BETWEEN 7 PM AND 10
PM...THIS LINE OF STORMS WILL MOVE EAST THROUGH MOST OF CENTRAL AND
SOUTHEAST OKLAHOMA. BE PREPARED AS THESE STORMS MOVE THROUGH.

JAMES

Local storm report, Mar 7, 6:43 PM CST, 1 hour 33 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
643 PM CST TUE MAR 07 2000

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

0627 PM    4 N LAWTON                OK   1.75 INCH HAIL
03/07/00   COMANCHE                       HAM RADIO REPORT

0633 PM    4 W FLETCHER              OK   1.00 INCH HAIL
03/07/00   COMANCHE                       HAM RADIO REPORT

0630 PM    2 W CYRIL                 OK   63 MPH WIND GUST
03/07/00   CADDO                          HAM RADIO REPORT

0634 PM    ANADARKO                  OK   WIND DAMAGE
03/07/00   CADDO                          SIGNS DOWN...TREE
                                          DAMAGE
                                          HAM RADIO REPORT

0630 PM    1 E WALTERS               OK   .88 INCH HAIL
03/07/00   COTTON                         HAM RADIO REPORT

KT

Local storm report, Mar 7, 7:20 PM CST, 56 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
720 PM CST TUE MAR 07 2000

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

0702 PM    3 S CHICKASHA             OK   .88 INCH HAIL
03/07/00   GRADY                          HAM RADIO REPORT

0700 PM    6 SW DUNCAN               OK   1.00 INCH HAIL
03/07/00   STEPHENS                       HAM RADIO REPORT

0706 PM    6 N DUNCAN                OK   .88 INCH HAIL
03/07/00   STEPHENS                       HAM RADIO REPORT

0640 PM    2 E CYRIL                 OK   .75 INCH HAIL
03/07/00   CADDO                          HAM RADIO REPORT

0639 PM    HENRIETTA                 TX   .88 INCH HAIL
03/07/00   CLAY                           HAM RVADIO REPORT

0630 PM    6 S HULEN                 OK   80 MPH WIND GUST
03/07/00   COTTON                         HAM RADIO REPORT

KT

Special weather statement, Mar 7, 7:41 PM CST, 35 minutes before

OKZ006-011-017-018-023-024-027-038-039-044-045-TXZ090-080215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
741 PM CST TUE MAR 7 2000

TORNADO WATCH NUMBER 73...IN EFFECT FOR PORTIONS OF WESTERN
AND CENTRAL OKLAHOMA...AND WESTERN NORTH TEXAS...HAS BEEN CANCELLED
FOR THE FOLLOWING COUNTIES IN OKLAHOMA...ALFALFA...MAJOR...BLAINE...
KINGFISHER...CANADIAN...CADDO...GRADY...COMANCHE...STEPHENS...
COTTON...AND JEFFERSON...AND INH TEXAS...CLAY COUNTY. THE SEVERE
WEATHER THREAT HAS MOVED OUT OF THESE COUNTIES.

JAMES

Local storm report, Mar 7, 7:50 PM CST, 26 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
750 PM CST TUE MAR 07 2000

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

0744 PM    4 S NEWCASTLE             OK   .88 INCH HAIL
03/07/00   MCCLAIN                        HAM RADIO REPORT

0747 PM    NEWCASTLE                 OK   .75 INCH HAIL
03/07/00   MCCLAIN                        HAM RADIO REPORT

KT

Local storm report, Mar 7, 7:55 PM CST, 21 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
755 PM CST TUE MAR 07 2000

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

0710 PM    S @OKARCHE                 OK   61 MPH WIND GUST
03/07/00   CANADIAN                       SPOTTER REPORT

KT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 7, 6:10 PM CST	Tornado Warning	OUN	Comanche	35 min
Mar 7, 6:21 PM CST	Severe Thunderstorm Warning	OUN	Blaine	39 min
Mar 7, 6:23 PM CST	Severe Thunderstorm Warning	OUN	Cotton	52 min
Mar 7, 6:36 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	54 min
Mar 7, 6:40 PM CST	Severe Thunderstorm Warning	OUN	Grady, Stephens	65 min
Mar 7, 6:40 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	65 min
Mar 7, 7:03 PM CST	Tornado Warning	OUN	Canadian	27 min
Mar 7, 7:24 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain	66 min
Mar 7, 7:24 PM CST	Severe Thunderstorm Warning	OUN	Oklahoma	66 min
Mar 7, 7:28 PM CST	Severe Thunderstorm Warning	OUN	Garvin	62 min
Mar 7, 7:35 PM CST	Severe Thunderstorm Warning	OUN	Carter	55 min
Mar 7, 7:40 PM CST	Severe Thunderstorm Warning	OUN	Logan	50 min
Mar 7, 7:58 PM CST	Severe Thunderstorm Warning	OUN	Garfield, Grant	47 min
Mar 7, 8:20 PM CST	Severe Thunderstorm Warning	OUN	Noble, Payne	40 min
Mar 7, 8:54 PM CST	Severe Thunderstorm Warning	OUN	Seminole	51 min
Mar 7, 9:44 PM CST	Severe Thunderstorm Warning	OUN	Hughes	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2000 Every severe thunderstorm warning in 2000

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.