Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 372, NWS Norman, OK

July 16, 1997Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 16, 1997, 8:03 PM CDT for Grant 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 counties it named.

The facts

Issued: Jul 16, 1997, 8:03 PM CDT (01:03 UTC)
Expired: Jul 16, 1997, 8:45 PM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Whole counties

County Grant County, OK

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 1.1 hours before the alert went out and 34 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: 2105 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2151 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.1

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 Jul 16, 3:43 PM CDT, 4 hours 20 minutes earlier.

Area forecast discussion, Jul 16, 3:43 PM CDT, 4 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 PM CDT WED JUL 16 1997

MCV CONTS TO MOVE SLOWLY EWD ACRS NRN OK THIS AFTN. WILL CONTINUE WITH
POPS FOR NCNTRL AND CNTRL ZONES FOR THIS EVENING BASED ON THIS FTR.
MORE CONVECTION HAS DVLPD OVR THE HIGH PLAINS OF CO. WITH NWLY UPR FLO
PREVAILING WILL OPT TO KEEP LO POPS IN THE NW. NGM/ETA S/W NOW OVER SRN KS
SWD ACRS OK AS UPR STRETCHES EWD INTO THE CNTRL PLAINS. WITH MOIST AMS RMNG
IN PLACE AND HOT TMPS EXPECTED TO CONT CUD SEE SCT TSTMS DVLP WITH THIS
FTR THUS WILL INCLUDE LO POPS FOR THURSDAY AND THURSDAY NIGHT MOST AREAS.
BY FRIDAY THIS FTR IS PROGGED TO CONT SWD INTO SRN OK AND WILL LIMIT POPS
TO SRN PTNS OF THE FA.

FCSTID = 02

OKC   71  95  71  94 /  10  20  20  20
HBR   71  99  71  98 /  10  10  10  20
SPS   71 100  72  99 /  10  10  10  20
GAG   67  98  67  98 /  20  20  20  10
PNC   76  97  76  96 /  20  20  10  10
DUA   72  96  72  95 /  10  10  10  20

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

In the hours before

Local storm report, Jul 16, 7:50 PM CDT, 13 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
750 PM CDT WED JUL 16 1997

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

0710 PM    3 N BRAMAN                OK   0.88 INCH HAIL
07/16/97   KAY

JS

Local storm report, Jul 16, 7:51 PM CDT, 12 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
750 PM CDT WED JUL 16 1997

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

0710 PM    3 N BRAMAN                OK   0.88 INCH HAIL
07/16/97   KAY

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:30 PM CDT	Severe Thunderstorm Warning	OUN	Kay	60 min
Jul 16, 7:45 PM CDT	Flash Flood Warning	OUN	Kay	2 hr
Jul 16, 8:32 PM CDT	Tornado Warning	OUN	Grant, Kay	28 min
Jul 16, 9:02 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	28 min
Jul 16, 9:48 PM CDT	Flash Flood Warning	OUN	Kay	117 min
Jul 17, 3:09 AM CDT	Flash Flood Warning	OUN	Kay	3 hr
Jul 17, 6:20 AM CDT	Flash Flood Warning	OUN	Kay, Noble	3 hr
Jul 17, 9:33 AM CDT	Flash Flood Warning	OUN	Kay, Noble	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; the sounding from the Mesonet's radiosonde archive.