Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 329, NWS Norman, OK

July 10, 2002Major County, Woods County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 10, 2002, 10:21 PM CDT for Major County, Woods County, Oklahoma. It was in force for 39 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: Jul 10, 2002, 10:21 PM CDT (03:21 UTC)
Expired: Jul 10, 2002, 11:00 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Major County, OK, Woods County, OK

The radar

The Vance AFB radar (KVNX), 56 km from the middle of the area, began a volume at 03:23 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.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 10:45 PM CDT	Hail 0.75	Cleo Spgs, 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

Lamont, OK (KLMN), launched 00:00Z, 3.4 hours before the alert went out and 109 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: 1555 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 2216 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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, 9:40 PM CDT, 41 minutes earlier.

Area forecast discussion, Jul 10, 9:40 PM CDT, 41 minutes before

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In the hours before

Local storm report, Jul 10, 8:30 PM CDT, 1 hour 51 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
830 PM CDT WED JUL 10 2002

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

0810 PM    MANCHESTER                OK   WIND DAMAGE
07/10/02   GRANT                          2 TO 3 INCH TREE
                                          LIMB DOWNED. PUBLIC
                                          REPORT.

0815 PM    8 NE AMORITA              OK   60 MPH WIND GUST
07/10/02   ALFALFA                        ESTIMATED BY PUBLIC.

KT

Local storm report, Jul 10, 8:51 PM CDT, 1 hour 30 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
851 PM CDT WED JUL 10 2002

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

0850 PM    4 NW CAPRON               OK   60 MPH WIND GUST
07/10/02   WOODS                          ESTIMATED BY PUBLIC.

KT

Local storm report, Jul 10, 9:24 PM CDT, 57 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
924 PM CDT WED JUL 10 2002

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

0905 PM    4 W BURLINGTON            OK   WIND DAMAGE
07/10/02   ALFALFA                        15 INCH TREE LIMB
                                          DOWNED. PUBLIC
                                          REPORT.

KT

Local storm report, Jul 10, 9:52 PM CDT, 29 minutes before

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Local storm report, Jul 10, 9:52 PM CDT, 29 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:08 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	52 min
Jul 10, 8:38 PM CDT	Severe Thunderstorm Warning	OUN	Woods	52 min
Jul 10, 9:02 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	28 min
Jul 10, 9:19 PM CDT	Severe Thunderstorm Warning	OUN	Grant	56 min
Jul 10, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Woods	44 min
Jul 11, 3:10 PM CDT	Severe Thunderstorm Warning	OUN	Greer	50 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2002 Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.