Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 343, NWS Norman, OK

July 10, 1997Logan County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 10, 1997, 3:41 PM CDT for Logan County, Oklahoma. It was in force for 49 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 10, 1997, 3:41 PM CDT (20:41 UTC)
Expired: Jul 10, 1997, 4:30 PM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Logan County, OK

The radar

The Norman radar (KTLX), 67 km from the middle of the area, began a volume at 20:40 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

Lamont, OK (KLMN), launched 12:00Z, 8.7 hours before the alert went out and 78 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: 1439 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1025 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 10, 10:52 AM CDT, 4 hours 49 minutes earlier.

Area forecast discussion, Jul 10, 10:52 AM CDT, 4 hours 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1050 AM CDT THU JUL 10 1997

UPDATED EARLIER THIS MRNG TO REMOVE SCT TSTMS FM SRN ZONES AS ACTIVITY
SEEMED TO DISSIPATE WITH ONSET OF DAYTIME HT`G. ATTM PLAN NO ADDNL
UPDATES THO TEMPS CLIMBING QUITE RAPIDLY AND MAY HV TO BUMP THEM UP
A LTL IN SOME AREAS.

FCSTID = 12

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

In the hours before

Local storm report, Jul 10, 1:59 PM CDT, 1 hour 42 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
200 PM CDT THU JUL 10 1997

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

155 PM     TONKAWA                   OK   0.75 INCH HAIL
07/10/97   KAY

JS

Local storm report, Jul 10, 2:00 PM CDT, 1 hour 41 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
200 PM CDT THU JUL 10 1997

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

155 PM     TONKAWA                   OK   0.75 INCH HAIL
07/10/97   KAY

JS

Local storm report, Jul 10, 2:27 PM CDT, 1 hour 14 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
230 PM CDT THU JUL 10 1997

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

210 PM     1 SW "PONCA CITY           OK   TREES AND POWER LINES DOWN
07/10/97   KAY

JS

Local storm report, Jul 10, 2:30 PM CDT, 1 hour 11 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
230 PM CDT THU JUL 10 1997

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

210 PM     1 SW PONCA CITY           OK   TREES AND POWER LINES DOWN
07/10/97   KAY

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:38 PM CDT	Severe Thunderstorm Warning	OUN	Kay	52 min
Jul 10, 2:55 PM CDT	Flash Flood Warning	OUN	Kay	95 min
Jul 10, 4:00 PM CDT	Flash Flood Warning	OUN	Logan	3 hr
Jul 10, 4:25 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	50 min
Jul 10, 6:06 PM CDT	Severe Thunderstorm Warning	OUN	Woods	39 min
Jul 10, 6:31 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	59 min
Jul 10, 6:45 PM CDT	Flash Flood Warning	OUN	Caddo, Comanche	3 hr
Jul 10, 6:54 PM CDT	Severe Thunderstorm Warning	OUN	Woods	66 min

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; radar from the NEXRAD Level II archive.