Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 71, NWS Norman, OK

April 2, 1994Payne County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 2, 1994, 6:21 PM CST for Payne County, Oklahoma. It was in force for 39 min.

The area

The counties it named.

The facts

Issued: Apr 2, 1994, 6:21 PM CST (00:21 UTC)
Expired: Apr 2, 1994, 7:00 PM CST
In force: 39 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Payne County, OK

The radar

The Norman radar (KTLX), 87 km from the middle of the area, began a volume at 00:23 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 00:00Z, 0.4 hours before the alert went out and 103 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: 1249 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1451 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Apr 2, 4:49 PM CST, 1 hour 32 minutes earlier.

Area forecast discussion, Apr 2, 4:49 PM CST, 1 hour 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OKLAHOMA
415 PM CST SAT APR 2 1994

THE 12Z MODELS INITIALIZED QUITE WELL ON UA SYS MOVG INTO FA THIS AFTN.
DIFFS WERE IN STRENGTH OF CIRCULATION DEPICTED BY VORT FIELDS. THE NGM
WAS STRONGEST THE AVN WEAKEST. THE SHAPE OF THE SYS ON SAT IMAGERY
SUPPORTS THE NGM BUT MAYBE NOT AS STRONG A VORT MAX. THE ETA INITIALIZED
BEST ON THE SFC LOW IN THE TX PNHNDL.

THE NGM AND ETA AGREE ON PHASING NRN AND SRN STRM SYS BY 24 HRS AS THEY
EXIT FA WHILE THE AVN PHASES MUCH FASTER, LOSING THE IDENTITY OF THE S/W
CIRC TOO SOON. THE NGM IS MORE CORRECT TAKING SFC LOW ON A MORE EWD
PATH THIS AFTN AND TONITE. THE ETA IS A LTL DEEPER WITH DVLPG SYS IN WRN
U.S. BY 48 HRS. 12Z UA ANAL DID NOT HELP INDC A PREFERENCE HERE EXCEPT
FOR PERHAPS A 100 KT JET MOVG EWD FM CNTRL PAC AT 25H. OTHER MODEL DIFFS
AT THAT POINT WILL NOT HAVE SIG IMPACT ON WX OVR FA.

LATEST VIS IMAGERY INDCD TRW DVLPG IN SW OK. KFDR 88D INDCD BNDRY
INTERSECTION/TRIPLE PT JUST W OF KFDR FOR FAVORABLE TRW FORMATION.
EXPECTING SVR TRW IN CNTRL OK, WRN PTNS N TX THIS EVE AND SE OK LATER
TONITE. SOME TRW PSBL BHND CDFNT UNDER 50H COLD POOL. WX WILL BE DRY ON
SUNDAY THRU MON NITE. NEXT PRECIP IN EXTENDED PD ON TUES. WL GO A LTL
BLO MOS TEMPS TIL MON WHERE WARMER FWC NMBRS LOOK BEST.

FCSTID=#22/BT

HBR   40  63  45  78 / 20  0   0   0
OKC   39  60  43  75 / 60  0   0   0
SPS   41  65  45  80 / 60  0   0   10
G.AG   32  63  43  78 / 30  0   0   0
PNC   35  59  41  75 / 60  0   0   10
DUA   41  63  41  75 / 80  0   0   10

.OKC...CAUTION ON AREA LAKES TONIGHT ZNS 04>53.
.TX...CAUTION ON AREA LAKES TONIGHT ZNS 83>90.

In the hours before

Local storm report, Apr 2, 4:35 PM CST, 1 hour 46 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
435 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

405 PM             GARFIELD            1 3/4 INCH HAIL VANCE AIR FORCE
                                       BASE WITH WIND GUST TO 51 MPH.

408 PM             GARFIELD            ONE INCH HAIL AT WAUKOMIS.

415 PM             GRADY               QUARTER SIZE HAIL 5 MILES WEST/
                                       5 MILES SOUTH OF CHICKASHA.

420 PM             GRADY               DIME SIZE HAIL SOUTH SIDE OF
                                       CHICKASHA.

425 PM             GRADY               NICKEL SIZE HAIL WEST SIDE OF
                                       NINNEKAH.

430 PM             GARFIELD            HALF DOLLAR SIZE HAIL WITH
                                       65-70 MPH WINDS IN COVINGTON.

ALA

Local storm report, Apr 2, 4:49 PM CST, 1 hour 32 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
448 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

434 PM             GRADY               DINE TO NICKEL SIZE HAIL IN
                                       NINNEKAH.

437 PM             GRADY               QUARTER SIZE HAIL 8 MILES SE OF
                                       CHICKASHA.

445 PM             GRADY               GOLFBALL SIZE HAIL 3 M,ILES SE OF
                                       ALEX.
ALA

Local storm report, Apr 2, 4:59 PM CST, 1 hour 22 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
458 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

449 PM             OKLAHOMA            DIME TO GOLF BALL SIZE HAIL
                                       REPORTED AT NICKEL HILLS FIRE
                                       DEPARTMENT.

454 PM             OKLAHOMA            11/2 INCH HAIL NE SIDE OF
                                       OKLAHOMA `CITY.

457 PM             NOBLE               QUARTER SIZE IN PERRY.

ALA

Local storm report, Apr 2, 5:12 PM CST, 1 hour 9 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
512 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

510 PM             PAYNE               QUARTER HAIL N SzIDE OF STILLWATER
                                       ALSO ESTIMATED 70 MPH WINDS.

CBW

Local storm report, Apr 2, 5:41 PM CST, 40 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
530 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

457 PM             NOBLE                QUARTER SIZE HAIL IN PERRY.

500 PM             E. GARFIELD          60+ MPH WINDS 6 MILES SOUTH
                                        OF COVINGTON.

520 PM             LINCOLN              QUARTER SIZE HAIL 6 MILES
                                        NORTHWEST OF CANEY.

515 PM             MCCLAIN              HALF DALLOR SIZE HAIL 5 MILES
                                        SW OF PURCELL.

525 PM             S. CLEVELAND         GOLF BALL SIZE HAIL IN
                                        LEXINGTON.

535 PM             LINCOLN              QUARTER SIZE HAIL IN AGRA.

Local storm report, Apr 2, 6:13 PM CST, 8 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
615 PM CST SAT APR 02 1994

TIME               COUNTY               LOCATION/EVENT

438 PM             GRADY                QUARTER SIZE HAIL 3 MILES
                                        SOUTHEAST OF CHICKASHA.

445 PM             OKLAHOMA             GOLF BALL SIZE HAIL NORTH
                                        SIDE OF EDMOND.

445 PM             LOGAN                3 MILES SSE OF MARSHALL WINDS
                                        61 MPH REPORTED BY OKLAHOMA
                                        MESONET.

454 PM             NE OKLAHOMA          11/2 INCH HAIL NE OKLAHOMA
                                        CITY.

502 PM             OKLAHOMA             GOLF BALL SIZE HAIL IN ARCADIA.

520 PM             GRANT                NICKEL SIZE HAIL IN CANEY.

525 PM             PAYNE                GOLFBALL HAIL 6 MILES SOUTH
                                        OF STILLWATER.

526 PM             MCCLAIN              TENNIS BALL HAIL 1 MILE EAST
                                        OF WAYNE.

530 PM             PAYNE                2 MILES WEST OF STILLWATER WINDS
                                        61 MPH REPORTED BY OKLAHOMA
                                        MESONET.

535 PM             CLEVELAND            DIME SIZE HAIL 4 MILES EAST OF
                                        LEXINGTON.

538 PM             MCCLAIN              HALF DOLLAR SIZE HAIL 2 MILES
                                        WEST OF BYARS.

540 PM             PAYNE                HALF DOLLAR SIZE HAIL IN
                                        CUSHING.

550 PM             GRANT                NICKEL SIZE HAIL 1 MILE SW
                                        OF JEFFERSON.

555 PM             POTTAWATOMIE      d   DIME SIZE HAIL 1 MILE SOUTH
                                        EASON.

ALA

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 6:08 PM CST	Severe Thunderstorm Warning	OUN	Kay	52 min
Apr 2, 6:15 PM CST	Severe Thunderstorm Warning	OUN	Love	45 min
Apr 2, 6:20 PM CST	Severe Thunderstorm Warning	OUN	Seminole	40 min
Apr 2, 6:26 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Marshall	49 min
Apr 2, 6:44 PM CST	Tornado Warning	OUN	Hughes, Pontotoc	31 min
Apr 2, 6:49 PM CST	Severe Thunderstorm Warning	OUN	Pontotoc	41 min
Apr 2, 7:09 PM CST	Tornado Warning	OUN	Pontotoc	36 min
Apr 2, 7:18 PM CST	Severe Thunderstorm Warning	OUN	Hughes	42 min
Apr 2, 7:36 PM CST	Severe Thunderstorm Warning	OUN	Coal	24 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1994 Every severe thunderstorm warning in 1994

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.