Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 528, NWS Norman, OK

July 7, 20237 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 7, 2023, 7:57 AM CDT for 7 counties in Oklahoma. It was in force for 48 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 7, 2023, 7:57 AM CDT (12:57 UTC)
Expired: Jul 7, 2023, 8:45 AM CDT
In force: 48 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Canadian County, OK, Cleveland County, OK, Grady County, OK, Lincoln County, OK, McClain County, OK, Oklahoma County, OK, Pottawatomie County, OK

The radar

The Norman radar (KTLX), 12 km from the middle of the area, began a volume at 13:01 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 7, 3:16 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 1.0 hours before the alert went out and 352 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: 2275 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 233 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 7, 6:31 AM CDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jul 7, 6:31 AM CDT, 1 hour 26 minutes before

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Hazardous weather outlook, Jul 7, 7:12 AM CDT, 45 minutes before

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In the hours before

Special weather statement, Jul 7, 6:58 AM CDT, 59 minutes before

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Local storm report, Jul 7, 7:03 AM CDT, 54 minutes before

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Local storm report, Jul 7, 7:06 AM CDT, 51 minutes before

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Special weather statement, Jul 7, 7:17 AM CDT, 40 minutes before

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Local storm report, Jul 7, 7:31 AM CDT, 26 minutes before

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Special weather statement, Jul 7, 7:40 AM CDT, 17 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 7, 2:52 AM CDT	Special Weather Statement	OUN	Harper	23 min
Jul 7, 3:05 AM CDT	Severe Thunderstorm Warning	OUN	Harper	26 min
Jul 7, 3:42 AM CDT	Areal Flood Advisory	OUN	Harper	3 hr
Jul 7, 3:55 AM CDT	Special Weather Statement	OUN	Harper	35 min
Jul 7, 4:00 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis	45 min
Jul 7, 4:12 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis, Woodward	33 min
Jul 7, 4:28 AM CDT	Tornado Warning	OUN	Woodward	22 min
Jul 7, 4:32 AM CDT	Areal Flood Advisory	OUN	Ellis, Harper, Woods	3 hr
Jul 7, 4:36 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Custer, Dewey, Ellis, Harper, Major, Roger Mills and 2 more	39 min
Jul 7, 4:46 AM CDT	Flash Flood Warning	OUN	Ellis, Harper	3 hr
Jul 7, 5:06 AM CDT	Areal Flood Advisory	OUN	Dewey, Ellis, Harper, Woodward	3 hr
Jul 7, 5:09 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Blaine, Custer, Dewey, Ellis, Major and 3 more	66 min
Jul 7, 5:14 AM CDT	Special Weather Statement	OUN	Ellis, Woodward	31 min
Jul 7, 5:39 AM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Ellis, Major, Roger Mills, Woodward	5 hr
Jul 7, 5:58 AM CDT	Flash Flood Warning	OUN	Custer, Dewey, Ellis, Roger Mills	3 hr
Jul 7, 6:13 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Grady, Kingfisher and 1 more	47 min
Jul 7, 6:15 AM CDT	Special Weather Statement	OUN	Beckham, Greer, Kiowa, Washita	30 min
Jul 7, 6:24 AM CDT	Areal Flood Advisory	OUN	Beckham, Blaine, Caddo, Canadian, Custer, Dewey and 2 more	4 hr
Jul 7, 6:37 AM CDT	Special Weather Statement	OUN	Beckham	23 min
Jul 7, 6:47 AM CDT	Special Weather Statement	OUN	Greer, Jackson, Kiowa, Washita	28 min
Jul 7, 6:56 AM CDT	Special Weather Statement	OUN	Canadian, Kingfisher	49 min
Jul 7, 6:58 AM CDT	Special Weather Statement	OUN	Caddo	47 min
Jul 7, 7:15 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, Kingfisher, Logan, McClain and 1 more	45 min
Jul 7, 7:17 AM CDT	Special Weather Statement	OUN	Kiowa	28 min
Jul 7, 7:18 AM CDT	Areal Flood Warning	OUN	Ellis, Harper	57 min
Jul 7, 7:36 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Jackson, Kiowa, Tillman	39 min
Jul 7, 7:40 AM CDT	Special Weather Statement	OUN	Caddo, Grady	35 min
Jul 7, 7:51 AM CDT	Areal Flood Advisory	OUN	Blaine, Kingfisher	3 hr
Jul 7, 8:08 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Stephens, Tillman	37 min
Jul 7, 8:23 AM CDT	Areal Flood Advisory	OUN	Kingfisher, Lincoln, Logan	112 min
Jul 7, 8:35 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, Lincoln, McClain, Oklahoma, Pontotoc and 2 more	40 min
Jul 7, 8:37 AM CDT	Areal Flood Warning	OUN	Custer, Dewey, Ellis, Roger Mills	83 min
Jul 7, 8:38 AM CDT	River Flood Advisory	OUN	Blaine, Canadian	5 hr
Jul 7, 8:40 AM CDT	River Flood Advisory	OUN	Woodward	31 hr
Jul 7, 8:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Cotton, Jefferson, Stephens	49 min
Jul 7, 8:47 AM CDT	River Flood Advisory	OUN	Blaine, Caddo, Canadian, Custer	47 hr
Jul 7, 8:50 AM CDT	Areal Flood Advisory	OUN	Comanche	3 hr
Jul 7, 9:14 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Garvin, Hughes, Johnston, McClain, Murray and 3 more	20 min
Jul 7, 9:18 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	42 min
Jul 7, 9:51 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Murray	39 min
Jul 7, 10:17 AM CDT	Special Weather Statement	OUN	Johnston, Marshall	28 min
Jul 7, 12:02 PM CDT	Special Weather Statement	OUN	Alfalfa	28 min
Jul 7, 12:18 PM CDT	Special Weather Statement	OUN	Alfalfa	27 min
Jul 7, 12:31 PM CDT	Special Weather Statement	OUN	Alfalfa	29 min
Jul 7, 12:48 PM CDT	Special Weather Statement	OUN	Garfield	27 min
Jul 7, 12:52 PM CDT	Special Weather Statement	OUN	Alfalfa	23 min
Jul 7, 1:12 PM CDT	Special Weather Statement	OUN	Garfield, Grant	33 min
Jul 7, 1:57 PM CDT	Special Weather Statement	OUN	Grant	33 min
Jul 7, 2:29 PM CDT	Special Weather Statement	OUN	Grant	31 min
Jul 7, 3:02 PM CDT	Special Weather Statement	OUN	Kay	28 min
Jul 7, 6:45 PM CDT	Special Weather Statement	OUN	Harper	30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023 Every severe thunderstorm warning in 2023

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.