Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 626, NWS Norman, OK

August 5, 2020Blaine County, Kingfisher County, Major County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 5, 2020, 1:28 AM CDT for Blaine County, Kingfisher County, Major County, Oklahoma. It was in force for 47 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 5, 2020, 1:28 AM CDT (06:28 UTC)
Expired: Aug 5, 2020, 2:15 AM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

Counties Blaine County, OK, Kingfisher County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 79 km from the middle of the area, began a volume at 06:28 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

Norman, OK (KOUN), launched 00:00Z, 6.5 hours before the alert went out and 123 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1583 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 184 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 Aug 4, 10:49 PM CDT, 2 hours 39 minutes earlier.

Area forecast discussion, Aug 4, 10:49 PM CDT, 2 hours 39 minutes before

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Hazardous weather outlook, Aug 4, 12:10 PM CDT, 13 hours 18 minutes before

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In the hours before

Special weather statement, Aug 4, 11:29 PM CDT, 1 hour 59 minutes before

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Special weather statement, Aug 5, 12:29 AM CDT, 59 minutes before

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Special weather statement, Aug 5, 12:43 AM CDT, 45 minutes before

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Special weather statement, Aug 5, 1:24 AM CDT, 4 minutes before

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Special weather statement, Aug 5, 1:25 AM CDT, 3 minutes before

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Special weather statement, Aug 5, 1:26 AM CDT, 2 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 4, 11:29 PM CDT	Special Weather Statement	OUN	Major	31 min
Aug 4, 11:44 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Major	46 min
Aug 5, 12:29 AM CDT	Special Weather Statement	OUN	Blaine	31 min
Aug 5, 12:43 AM CDT	Special Weather Statement	OUN	Major	32 min
Aug 5, 12:55 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	35 min
Aug 5, 1:24 AM CDT	Special Weather Statement	OUN	Canadian	36 min
Aug 5, 1:25 AM CDT	Special Weather Statement	OUN	Kingfisher	35 min
Aug 5, 1:26 AM CDT	Special Weather Statement	OUN	Alfalfa	34 min
Aug 5, 1:42 AM CDT	Special Weather Statement	OUN	Major	33 min
Aug 5, 1:59 AM CDT	Special Weather Statement	OUN	Alfalfa, Woods	31 min
Aug 5, 2:00 AM CDT	Special Weather Statement	OUN	Canadian	30 min
Aug 5, 2:05 AM CDT	Special Weather Statement	OUN	Harper	25 min
Aug 5, 2:09 AM CDT	Special Weather Statement	OUN	Logan	36 min
Aug 5, 2:15 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	45 min
Aug 5, 2:30 AM CDT	Special Weather Statement	OUN	Alfalfa, Woods	30 min
Aug 5, 2:32 AM CDT	Areal Flood Advisory	OUN	Harper, Woods, Woodward	118 min
Aug 5, 2:34 AM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Canadian	116 min
Aug 5, 2:53 AM CDT	Flash Flood Warning	OUN	Blaine	3 hr
Aug 5, 3:04 AM CDT	Special Weather Statement	OUN	Garfield, Major	41 min
Aug 5, 3:36 AM CDT	Areal Flood Advisory	OUN	Kingfisher	114 min
Aug 5, 4:36 AM CDT	Special Weather Statement	OUN	Hughes	24 min
Aug 5, 4:42 AM CDT	Special Weather Statement	OUN	Grady	33 min
Aug 5, 5:02 AM CDT	Areal Flood Advisory	OUN	Canadian	118 min
Aug 5, 5:14 AM CDT	Special Weather Statement	OUN	McClain	31 min
Aug 5, 5:45 AM CDT	Areal Flood Warning	OUN	Blaine, Kingfisher	3 hr
Aug 5, 5:49 AM CDT	Special Weather Statement	OUN	Coal	26 min
Aug 5, 7:21 AM CDT	Areal Flood Advisory	OUN	Coal, Pontotoc	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm warning in 2020

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.