Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 569, NWS Norman, OK

August 18, 2018Love County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 18, 2018, 5:38 PM CDT for Love County, Oklahoma. It was in force for 18 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: Aug 18, 2018, 5:38 PM CDT (22:38 UTC)
Expired: Aug 18, 2018, 5:56 PM CDT
In force: 18 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Love County, OK

The radar

The Dallas/Ft Worth radar (KFWS), 153 km from the middle of the area, began a volume at 22:40 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

Fort Worth, TX (KFWD), launched 12:00Z, 10.6 hours before the alert went out and 125 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: 452 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 1585 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Aug 18, 3:09 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, Aug 18, 3:09 PM CDT, 2 hours 29 minutes before

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Hazardous weather outlook, Aug 18, 4:22 PM CDT, 1 hour 16 minutes before

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In the hours before

Special weather statement, Aug 18, 4:03 PM CDT, 1 hour 35 minutes before

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Special weather statement, Aug 18, 4:22 PM CDT, 1 hour 16 minutes before

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Special weather statement, Aug 18, 4:50 PM CDT, 48 minutes before

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Special weather statement, Aug 18, 4:56 PM CDT, 42 minutes before

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Special weather statement, Aug 18, 5:09 PM CDT, 29 minutes before

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Special weather statement, Aug 18, 5:30 PM CDT, 8 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
Aug 17, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray, Pontotoc	42 min
Aug 17, 7:57 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Stephens	48 min
Aug 17, 7:59 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray, Pontotoc	25 min
Aug 17, 8:12 PM CDT	Areal Flood Advisory	OUN	Garvin	3 hr
Aug 17, 8:12 PM CDT	Areal Flood Advisory	OUN	Garvin	3 hr
Aug 17, 8:57 PM CDT	Special Weather Statement	OUN	Grady	33 min
Aug 18, 1:57 PM CDT	Special Weather Statement	OUN	Cotton	33 min
Aug 18, 2:24 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	51 min
Aug 18, 2:46 PM CDT	Areal Flood Advisory	OUN	Cotton	119 min
Aug 18, 3:00 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	45 min
Aug 18, 3:32 PM CDT	Special Weather Statement	OUN	Jefferson	13 min
Aug 18, 3:44 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Stephens	34 min
Aug 18, 3:53 PM CDT	Special Weather Statement	OUN	Stephens	37 min
Aug 18, 4:03 PM CDT	Special Weather Statement	OUN	Love	27 min
Aug 18, 4:22 PM CDT	Special Weather Statement	OUN	Carter, Garvin, Love, Murray	38 min
Aug 18, 4:51 PM CDT	Severe Thunderstorm Warning	OUN	Carter	24 min
Aug 18, 4:56 PM CDT	Special Weather Statement	OUN	Love	34 min
Aug 18, 5:08 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Marshall	39 min
Aug 18, 5:30 PM CDT	Special Weather Statement	OUN	Marshall	30 min
Aug 18, 5:42 PM CDT	Special Weather Statement	OUN	Marshall	33 min
Aug 18, 6:09 PM CDT	Special Weather Statement	OUN	Marshall	36 min
Aug 18, 4:50 PM CDT	Special Weather Statement	OUN	Clay	25 min
Aug 18, 5:09 PM CDT	Special Weather Statement	OUN	Clay	36 min
Aug 18, 5:21 PM CDT	Areal Flood Advisory	OUN	Clay	3 hr
Aug 18, 5:45 PM CDT	Special Weather Statement	OUN	Jack	30 min
Aug 18, 5:53 PM CDT	Severe Thunderstorm Warning	OUN	Clay	34 min
Aug 18, 6:24 PM CDT	Special Weather Statement	OUN	Clay	36 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2018 Every severe thunderstorm warning in 2018

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.