Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 504, NWS Norman, OK

October 8, 1997Comanche County, Grady County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 8, 1997, 11:04 PM CDT for Comanche County, Grady County, Oklahoma. It was in force for 41 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: Oct 8, 1997, 11:04 PM CDT (04:04 UTC)
Expired: Oct 8, 1997, 11:45 PM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Comanche County, OK, Grady County, OK

What was reported inside it

Time	Report	Where	Remark
Oct 8, 11:25 PM CDT	Hail 0.75	Rush Springs, OK

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, 4.1 hours before the alert went out and 83 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: 2384 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 800 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.2

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 Oct 8, 8:40 PM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Oct 8, 8:40 PM CDT, 2 hours 24 minutes before

FPUS3 KOKC 090140
AFDOKC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
840 PM CDT WED OCT 8 1997

MDT CAPE AND SHEAR HAVE COMBINED TO PRODUCE ACTIVE EVENING OF SUPERCELLS
ACROSS CENTRAL OKLAHOMA. STORMS CONTINUE TO FIRE ALONG AND IN ADVANCE OF
SURFACE BOUNDARY FROM NEAR CHEROKEE SWD TO NEAR ALTUS AT 0130Z. ANALYSIS
OF OKLAHOMA MESONETWORK DATA AND KFDR VELOCITY PRODUCTS INDICATES
BOUNDARY IS STATIONARY OR PUSHING SLIGHTLY EASTWARD.  GIVEN THESE TRENDS
IT APPEARS BOUNDARY WILL BE SLOWER THAN PREVIOUS FORECAST...AND MAY NOT
MOVE MUCH AT ALL UNTIL FRONT LOCATED IN WESTERN KANSAS MOVES INTO
OKLAHOMA...WHICH SHOULD HAPPEN DURING EARLY MORNING HOURS BASED ON
ISALLOBARIC MAXIMUM IN CENTRAL PLAINS.

IN THE MEANTIME...SCT CONVECTION...SOME SEVERE...WILL CONTINUE MAINLY
ACROSS CENTRAL ONE THIRD OF OKLAHOMA TO THE EAST OF SURFACE BOUNDARY.
WILL UPDATE ZONES TO ADJUST FOR SLOWER INTRUSION OF LOW-LEVEL DRY AIR.

..16..

.OKC...
OK...NONE.
TX...NONE.

DA

In the hours before

Local storm report, Oct 8, 8:55 PM CDT, 2 hours 9 minutes before

LOCAL STORM REPORT...CORRECTED FOR COUNTY
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
715 PM CDT WED OCT 08 1997

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

0855 PM    7 SE BILLINGS             OK   TORNADO
10/08/97   NOBLE                          REPORTED BY SPOTTER

JS

Local storm report, Oct 8, 10:10 PM CDT, 54 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1010 PM CDT WED OCT 08 1997

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

805  PM      I35 AND MEMORIAL      OK        60 MPH WIND
             OKLAHOMA

830  PM      I35 AND WATERLOO RD   OK        0.88 INCH HAIL
10/08/97     OKLAHOMA

857  PM      2 W CYRIL             OK        0.88 INCH HAIL
             CADDO

JR

Local storm report, Oct 8, 10:17 PM CDT, 47 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1010 PM CDT WED OCT 08 1997

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

805  PM      I35 AND MEMORIAL      OK        60 MPH WIND
             OKLAHOMA

830  PM      I35 AND WATERLOO RD   OK        0.88 INCH HAIL
10/08/97     OKLAHOMA

857  PM      2 W CYRIL             OK        0.88 INCH HAIL
             CADDO

JR

Local storm report, Oct 8, 10:30 PM CDT, 34 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1030 PM CDT WED OCT 08 1997

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

715  PM      192ND AND COUNTY LINE    OK     0.88 INCH HAIL
10/08/97     OKLAHOMA

718  PM      NW 113TH AND COUNCIL RD  OK     1.00 INCH HAIL
10/08/97     OKLAHOMA

727  PM      NW 113TH AND COUNCIL RD  OK     1.75 INCH HAIL
10/08/97     OKLAHOMA

732 PM       MCARTHUR AND MEMORIAL    OK     1.75 INCH HAIL
10/08/97     OKLAHOMA

JR

Local storm report, Oct 8, 10:32 PM CDT, 32 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1030 PM CDT WED OCT 08 1997

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

715  PM      192ND AND COUNTY LINE    OK     0.88 INCH HAIL
10/08/97     OKLAHOMA

718  PM      NW 113TH AND COUNCIL RD  OK     1.00 INCH HAIL
10/08/97     OKLAHOMA

727  PM      NW 113TH AND COUNCIL RD  OK     1.75 INCH HAIL
10/08/97     OKLAHOMA

732 PM       MCARTHUR AND MEMORIAL    OK     1.75 INCH HAIL
10/08/97     OKLAHOMA

JR

Local storm report, Oct 8, 10:38 PM CDT, 26 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
1035 PM CDT WED OCT 08 1997

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

808  PM      CITY OF PERKINS          OK     0.75 INCH HAIL & 70-80 MPH
10/08/97     PAYNE                           WINDS

807  PM      4 S OF PERKINS           OK     WND DAMAGE 1 FT DIAMETER
10/08/97     N. LINCOLN                      TREE BLOWN OVER ON PORCH OF
                                             RESIDENCE

JR

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 7:32 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	43 min
Oct 8, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	45 min
Oct 8, 8:14 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	61 min
Oct 8, 8:53 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	37 min
Oct 8, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady	35 min
Oct 8, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Logan	45 min
Oct 8, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	46 min
Oct 8, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	51 min
Oct 8, 11:00 PM CDT	Flash Flood Warning	OUN	Oklahoma	2 hr
Oct 8, 11:52 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Stephens	53 min
Oct 8, 11:55 PM CDT	Flash Flood Warning	OUN	Comanche	2 hr
Oct 9, 4:50 AM CDT	Flash Flood Warning	OUN	Jefferson	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997 Every severe thunderstorm warning in 1997

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.