Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 628, NWS Norman, OK

November 5, 2015Jefferson County, Stephens County, Oklahoma; Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Nov 5, 2015, 1:01 PM CST for Jefferson County, Stephens County, Oklahoma; Clay County, Texas. It was in force for 29 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: Nov 5, 2015, 1:01 PM CST (19:01 UTC)
Expired: Nov 5, 2015, 1:30 PM CST
In force: 29 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Jefferson County, OK, Stephens County, OK, Clay County, TX

The radar

The Altus AFB radar (KFDR), 97 km from the middle of the area, began a volume at 19:04 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
Nov 5, 12:06 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.0 hours before the alert went out and 132 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: 541 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.5

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 Nov 5, 11:24 AM CST, 1 hour 37 minutes earlier.

Area forecast discussion, Nov 5, 11:24 AM CST, 1 hour 37 minutes before

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Hazardous weather outlook, Nov 5, 11:23 AM CST, 1 hour 38 minutes before

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In the hours before

Special weather statement, Nov 5, 12:00 PM CST, 1 hour 1 minute before

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Special weather statement, Nov 5, 12:25 PM CST, 36 minutes before

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Local storm report, Nov 5, 12:31 PM CST, 30 minutes before

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Local storm report, Nov 5, 12:47 PM CST, 14 minutes before

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Local storm report, Nov 5, 12:48 PM CST, 13 minutes before

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Special weather statement, Nov 5, 12:58 PM CST, 3 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
Nov 5, 4:19 AM CST	Frost Advisory	OUN	Ellis, Harper	29 hr
Nov 5, 7:49 AM CST	Special Weather Statement	OUN	Kiowa	26 min
Nov 5, 8:28 AM CST	Special Weather Statement	OUN	Canadian	32 min
Nov 5, 8:56 AM CST	Special Weather Statement	OUN	Comanche	49 min
Nov 5, 8:59 AM CST	Special Weather Statement	OUN	Tillman	46 min
Nov 5, 9:03 AM CST	Special Weather Statement	OUN	Canadian	27 min
Nov 5, 9:39 AM CST	Special Weather Statement	OUN	Grady	36 min
Nov 5, 9:55 AM CST	Special Weather Statement	OUN	Cotton	35 min
Nov 5, 10:01 AM CST	Severe Thunderstorm Warning	OUN	Cotton	29 min
Nov 5, 10:13 AM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Cleveland, Grady, McClain, Oklahoma	32 min
Nov 5, 10:17 AM CST	Special Weather Statement	OUN	Payne	28 min
Nov 5, 10:25 AM CST	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	32 min
Nov 5, 10:36 AM CST	Special Weather Statement	OUN	Stephens	24 min
Nov 5, 10:51 AM CST	Special Weather Statement	OUN	Oklahoma	24 min
Nov 5, 11:13 AM CST	Special Weather Statement	OUN	Cleveland	32 min
Nov 5, 11:17 AM CST	Special Weather Statement	OUN	Oklahoma	28 min
Nov 5, 11:23 AM CST	Special Weather Statement	OUN	Grady	37 min
Nov 5, 11:46 AM CST	Special Weather Statement	OUN	Cotton	29 min
Nov 5, 11:50 AM CST	Special Weather Statement	OUN	Cleveland, Grady	25 min
Nov 5, 12:00 PM CST	Special Weather Statement	OUN	Stephens	30 min
Nov 5, 12:03 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Oklahoma	27 min
Nov 5, 12:05 PM CST	Severe Thunderstorm Warning	OUN	Stephens	25 min
Nov 5, 12:25 PM CST	Special Weather Statement	OUN	McClain	35 min
Nov 5, 12:26 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	34 min
Nov 5, 12:42 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pottawatomie	33 min
Nov 5, 12:58 PM CST	Special Weather Statement	OUN	Jefferson	32 min
Nov 5, 1:03 PM CST	Special Weather Statement	OUN	Lincoln	27 min
Nov 5, 1:16 PM CST	Special Weather Statement	OUN	Pottawatomie, Seminole	29 min
Nov 5, 1:30 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	30 min
Nov 5, 1:35 PM CST	Severe Thunderstorm Warning	OUN	Hughes, Pottawatomie, Seminole	40 min
Nov 5, 1:58 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Johnston, Murray, Pontotoc	32 min
Nov 5, 2:09 PM CST	Severe Thunderstorm Warning	OUN	Jefferson, Love	36 min
Nov 5, 2:28 PM CST	Severe Thunderstorm Warning	OUN	Coal, Johnston, Murray, Pontotoc	16 min
Nov 5, 2:32 PM CST	Special Weather Statement	OUN	Hughes, Pontotoc, Seminole	28 min
Nov 5, 2:37 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall, Murray	38 min
Nov 5, 2:49 PM CST	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall	21 min
Nov 5, 2:55 PM CST	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	35 min
Nov 5, 3:18 PM CST	Special Weather Statement	OUN	Johnston, Marshall	27 min
Nov 5, 3:29 PM CST	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston, Pontotoc	46 min
Nov 5, 3:45 PM CST	Special Weather Statement	OUN	Marshall	30 min
Nov 5, 4:17 PM CST	Special Weather Statement	OUN	Atoka	28 min
Nov 5, 4:19 PM CST	Special Weather Statement	OUN	Bryan	26 min
Nov 5, 4:46 PM CST	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston, Marshall	44 min
Nov 5, 5:25 PM CST	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Marshall	50 min
Nov 5, 5:58 PM CST	Areal Flood Advisory	OUN	Atoka, Bryan	3 hr
Nov 5, 9:20 AM CST	Special Weather Statement	OUN	Baylor, Wichita	40 min
Nov 5, 9:37 AM CST	Special Weather Statement	OUN	Baylor	23 min
Nov 5, 10:04 AM CST	Special Weather Statement	OUN	Wilbarger	26 min
Nov 5, 11:26 AM CST	Special Weather Statement	OUN	Archer	34 min
Nov 5, 11:58 AM CST	Special Weather Statement	OUN	Archer	32 min
Nov 5, 12:29 PM CST	Severe Thunderstorm Warning	OUN	Archer, Clay	31 min
Nov 5, 1:49 PM CST	Special Weather Statement	OUN	Clay	26 min
Nov 5, 1:55 PM CST	Severe Thunderstorm Warning	OUN	Clay	35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2015 Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.