Alert archive / Oklahoma / Tornado Warnings in 1993

Tornado Warning 40, NWS Norman, OK

May 8, 1993Grady County, Oklahoma

NWS Norman, OK issued this tornado warning at May 8, 1993, 5:51 PM CDT for Grady County, Oklahoma. It was in force for 39 min.

The area

The counties it named.

The facts

Issued: May 8, 1993, 5:51 PM CDT (22:51 UTC)
Expired: May 8, 1993, 6:30 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Grady County, OK

The radar

The Norman radar (KTLX), 65 km from the middle of the area, began a volume at 22:54 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, 10.9 hours before the alert went out and 49 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: 1606 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.9

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 tornado 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 tornado warning went out at May 8, 4:35 PM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, May 8, 4:35 PM CDT, 1 hour 16 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
430 PM CDT SAT MAY 8 1993

VRY ACTV SVR WX THIS AFTN PRECLUDING MUCH FCST DISC. WL CONT WITH FFA
FOR MOST OF FCST AREA XPCT FOR NWRN OK. SVR WX AND MAJOR HVY RN PRBLMS
TO PERSIST INTO EVE.

32

.OK...FFA ZNS 6>21 TNGT
.TX...FFA TNGT ZNS 76 77

In the hours before

Local storm report, May 8, 4:59 PM CDT, 52 minutes before

LOCAL STORM REPORT...OCRRECTION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
500 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

429     PM          JACKSON          QUARTER SIZE HAIL AT ALTUS AIR
                                     FORCE BASE

434     PM          OKLAHOMA         DIME SIZE HAIL AT WILL ROGERS
                                     AIRPORT

440     PM          CLAY/ARCHER      GOLFBALL SIZE HAIL ON HWY 1954 ON
                    TEXAS            COUNTY LINE
440     PM          CLAY, TEXAS      NICKEL SIZE HAIL IN JOLLY

443     PM          GRADY            QUARTER SIZE HAIL IN TUTTLE

448     PM          CLAY, TEXAS      QUARTE>R SIZE IN JOLLY

449     PM          OKLAHOMA         3/4 INCH HAIL AT WILL ROGER AIRPORT

Local storm report, May 8, 5:00 PM CDT, 51 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
500 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

429     PM          JACKSON          QUARTER SIZE HAIL AT ALTUS AIR
                                     FORCE BASE

434     PM          OKLAHOMA         DIME SIZE HAIL AT WILL ROGERS
                                     AIRPORT

440     PM          CLAY/ARCHER      GOLFBALL SIZE HAIL ON HWY 1954 ON
                    TEXAS            COUNTY LINE
440     PM          CLAY, TEXAS      NICKEL SIZE HAIL IN JOLLY

443     PM          GRADY            QUARTER SIZE HAIL IN TUTTLE

448     PM          CLAY, TEXAS      QUARTER SIZE IN JOLLY

449     PM          OKLAHOMA         3/4 INCH HAIL AT WILL ROGER AIRPORT

Local storm report, May 8, 5:29 PM CDT, 22 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
500 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

429     PM          JACKSON          QUARTER SIZE HAIL AT ALTUS AIR
                                     FORCE BASE

434     PM          OKLAHOMA         DIME SIZE HAIL AT WILL ROGERS
                                     AIRPORT

440     PM          CLAY/ARCHER      GOLFBALL SIZE HAIL ON HWY 1954 ON
                    TEXAS            COUNTY LINE
440     PM          CLAY, TEXAS      NICKEL SIZE HAIL IN JOLLY

443     PM          GRADY            QUARTER SIZE HAIL IN TUTTLE

448     PM          CLAY, TEXASv      QUARTER SIZE IN JOLLY

449     PM          OKLAHOMA         3/4 INCH HAIL AT WILL ROGER AIRPORT

Local storm report, May 8, 5:31 PM CDT, 20 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
420 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

240     PM          GRADY            DIME SIZE HAIL IN CHICKASHA

355     PM          KIOWA            GOLFBALL SIZE HAIL IN ROOSEVELT

355     PM          OKLAHOMA         DIME SIZE HAIL COVERING ROAD AT
                                     PENN AND BRITTON

355     PM          ARCHER           GOLFBALL SIZE HAIL IN HOLLIDAY

355     PM          OKLAHOMA         QUARTER SIZE HAIL IN OKLAHOMA CITY

400     PM          WICHITA          GOLFBALL SIZE HAIL 4 MILES NORTH OF
                                     HOLLIDAY

400     PM          ARCHER           QUARTER SIZE HAIL IN NORTHERN
                                     PART OF THE COUNTY

401     PM          MCCLAIN/GRADY    1-INCH HAIL 6 MILES WEST OF
                                     NEWCASTLE ON GRADY - MCCLAIN COUNTY
                                     LINE

405     PM          WICHITA          NICKEL SIZE HAIL IN WICHITA FALLS

410     PM          WICHITA          GOLFBALL SIZE HAIL AT THE STADIUM
                                     IN WICHITA FALLS

415     PM          JACKSON          BASEBALL SIZE 4 MILES SOUTH OF
                                     ALTUS

Local storm report, May 8, 5:40 PM CDT, 11 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
540 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

453     PM          OKLAHOMA         1 INCH HAIL AT SW 59TH AND MCARTHUR
                                     IN OKLAHOMA CITY
455     PM          JACKSON          NICKEL  SIZE HAIL 2 MILES SOUTH
                                     AND 6 MILES EAST OF ALTUS
455     PM          JACKSON          BASEBALL SIZE HAIL 5 MILES EAST
                                     OF LAWTON
517     PM          GRADY            DIME SIZE HAIL NEAR VERDEN

522     PM          OKLAHOMA         DIME SIZE HAIL AT HWY 240 AND
                                     AIRPORT ROAD

Local storm report, May 8, 5:41 PM CDT, 10 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
540 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

453     PM          OKLAHOMA         1 INCH HAIL AT SW 59TH AND MCARTHUR
                                     IN OKLAHOMA CITY
455     PM          JACKSON          NICKEL  SIZE HAIL 2 MILES SOUTH
                                     AND 6 MILES EAST OF ALTUS
455     PM          JACKSON          BASEBALL SIZE HAIL 5 MILES EAST
                                     OF LAWTON
517     PM          GRADY            DIME SIZE HAIL NEAR VERDEN

522     PM          OKLAHOMA         DIME SIZE HAIL AT HWY 240 AND
                                     AIRPORT ROAD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 7:02 PM CDT	Tornado Warning	OUN	Greer, Harmon	43 min
May 7, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	40 min
May 7, 7:24 PM CDT	Tornado Warning	OUN	Beckham	51 min
May 7, 7:37 PM CDT	Severe Thunderstorm Warning	OUN	Woods	38 min
May 7, 7:54 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Washita	51 min
May 7, 8:13 PM CDT	Tornado Warning	OUN	Beckham	32 min
May 7, 8:19 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	41 min
May 7, 8:23 PM CDT	Flash Flood Warning	OUN	Ellis	3 hr
May 7, 8:38 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	52 min
May 7, 8:39 PM CDT	Tornado Warning	OUN	Blaine, Dewey	36 min
May 7, 9:39 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	51 min
May 7, 9:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	47 min
May 7, 9:49 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche	41 min
May 7, 9:58 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kay, Noble	47 min
May 7, 10:28 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	47 min
May 7, 10:42 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	33 min
May 7, 10:50 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Logan, Oklahoma	40 min
May 7, 10:50 PM CDT	Severe Thunderstorm Warning	OUN	McClain	40 min
May 7, 11:15 PM CDT	Flash Flood Warning	OUN	Kay	3 hr
May 7, 11:21 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	54 min
May 7, 11:30 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	45 min
May 8, 12:46 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	44 min
May 8, 1:08 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	52 min
May 8, 3:16 AM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	44 min
May 8, 5:06 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	39 min
May 8, 5:22 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	53 min
May 8, 7:01 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	44 min
May 8, 9:15 AM CDT	Flash Flood Warning	OUN	Beckham, Greer, Kiowa	4 hr
May 8, 9:15 AM CDT	Flash Flood Warning	OUN	Caddo, Washita	4 hr
May 8, 12:55 PM CDT	Flash Flood Warning	OUN	Caddo, Kiowa, Washita	4 hr
May 8, 1:15 PM CDT	Flash Flood Warning	OUN	Blaine, Canadian, Kingfisher	3 hr
May 8, 1:58 PM CDT	Tornado Warning	OUN	Grady	32 min
May 8, 2:27 PM CDT	Severe Thunderstorm Warning	OUN	Grady	48 min
May 8, 2:37 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	53 min
May 8, 2:50 PM CDT	Flash Flood Warning	OUN	Cleveland, Grady, McClain	3 hr
May 8, 2:50 PM CDT	Flash Flood Warning	OUN	Oklahoma	3 hr
May 8, 2:50 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	40 min
May 8, 3:15 PM CDT	Flash Flood Warning	OUN	Logan, Payne	3 hr
May 8, 3:28 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	62 min
May 8, 3:34 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	56 min
May 8, 3:51 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	54 min
May 8, 3:51 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	54 min
May 8, 3:57 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	48 min
May 8, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	62 min
May 8, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	62 min
May 8, 4:45 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	45 min
May 8, 5:01 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	59 min
May 8, 5:05 PM CDT	Tornado Warning	OUN	Cotton	25 min
May 8, 5:08 PM CDT	Tornado Warning	OUN	Jefferson	67 min
May 8, 5:13 PM CDT	Tornado Warning	OUN	Stephens	62 min
May 8, 5:15 PM CDT	Flash Flood Warning	OUN	Kingfisher	3 hr
May 8, 5:55 PM CDT	Flash Flood Warning	OUN	Cleveland, McClain, Oklahoma	3 hr
May 8, 6:06 PM CDT	Tornado Warning	OUN	Jefferson	39 min
May 8, 6:14 PM CDT	Flash Flood Warning	OUN	Lincoln, Payne	2 hr
May 8, 6:16 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	44 min
May 8, 6:24 PM CDT	Flash Flood Warning	OUN	Grady	2 hr
May 8, 6:35 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain	40 min
May 8, 6:42 PM CDT	Tornado Warning	OUN	Jefferson	63 min
May 8, 6:48 PM CDT	Severe Thunderstorm Warning	OUN	Carter	42 min
May 8, 6:53 PM CDT	Tornado Warning	OUN	Carter	37 min
May 7, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Knox	45 min
May 8, 3:18 PM CDT	Tornado Warning	OUN	Wilbarger	42 min
May 8, 3:28 PM CDT	Tornado Warning	OUN	Archer	47 min
May 8, 3:36 PM CDT	Severe Thunderstorm Warning	OUN	Wichita	39 min
May 8, 4:17 PM CDT	Tornado Warning	OUN	Archer, Wichita	28 min
May 8, 4:22 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	53 min
May 8, 6:58 PM CDT	Flash Flood Warning	OUN	Archer, Clay	3 hr
May 8, 6:58 PM CDT	Flash Flood Warning	OUN	Baylor	3 hr

Nearby

Tornado Warnings in Oklahoma, 1993 Every tornado warning in 1993 Tornadoes in 1993

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.