Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Norman, OK

May 9, 2016Johnston County, Marshall County, Oklahoma

NWS Norman, OK issued this special weather statement at May 9, 2016, 7:13 AM CDT for Johnston County, Marshall County, Oklahoma. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 9, 2016, 7:13 AM CDT (12:13 UTC)
Expired: May 9, 2016, 7:45 AM CDT
In force: 32 min
Issued by: NWS Norman, OK

Counties Johnston County, OK, Marshall County, OK

The radar

The Norman radar (KTLX), 132 km from the middle of the area, began a volume at 12:13 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 12:00Z, 0.2 hours before the alert went out and 128 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: 686 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 336 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 9, 6:12 AM CDT, 1 hour 1 minute earlier.

Area forecast discussion, May 9, 6:12 AM CDT, 1 hour 1 minute before

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Hazardous weather outlook, May 9, 3:30 AM CDT, 3 hours 43 minutes before

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In the hours before

Special weather statement, May 9, 5:02 AM CDT, 2 hours 11 minutes before

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Special weather statement, May 9, 5:32 AM CDT, 1 hour 41 minutes before

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Special weather statement, May 9, 5:48 AM CDT, 1 hour 25 minutes before

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Special weather statement, May 9, 6:25 AM CDT, 48 minutes before

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Special weather statement, May 9, 6:29 AM CDT, 44 minutes before

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Special weather statement, May 9, 7:13 AM CDT, 0 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
May 8, 7:13 PM CDT	Tornado Warning	OUN	Stephens	21 min
May 8, 7:15 PM CDT	Special Weather Statement	OUN	Grady	30 min
May 8, 7:17 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	43 min
May 8, 7:49 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	41 min
May 8, 8:18 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer	42 min
May 8, 8:44 PM CDT	Special Weather Statement	OUN	Pottawatomie, Seminole	31 min
May 8, 8:59 PM CDT	Special Weather Statement	OUN	Kingfisher	31 min
May 8, 9:07 PM CDT	Special Weather Statement	OUN	Atoka, Bryan, Carter, Coal, Johnston, Love and 1 more	53 min
May 8, 9:09 PM CDT	Special Weather Statement	OUN	Alfalfa, Major	51 min
May 8, 9:29 PM CDT	Special Weather Statement	OUN	Dewey	46 min
May 8, 9:35 PM CDT	Special Weather Statement	OUN	Grant	25 min
May 9, 5:32 AM CDT	Special Weather Statement	OUN	McClain	28 min
May 9, 5:48 AM CDT	Special Weather Statement	OUN	Jefferson	27 min
May 9, 6:25 AM CDT	Special Weather Statement	OUN	Carter, Johnston, Murray	50 min
May 9, 6:29 AM CDT	Special Weather Statement	OUN	Carter, Love	46 min
May 9, 2:51 PM CDT	Special Weather Statement	OUN	Alfalfa, Major	39 min
May 9, 3:02 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	58 min
May 9, 3:14 PM CDT	Special Weather Statement	OUN	Alfalfa	31 min
May 9, 3:37 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray	38 min
May 9, 3:38 PM CDT	Special Weather Statement	OUN	Alfalfa	22 min
May 9, 3:43 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	47 min
May 9, 3:55 PM CDT	Severe Thunderstorm Warning	OUN	Love, Marshall	65 min
May 9, 3:58 PM CDT	Special Weather Statement	OUN	Cleveland	47 min
May 9, 4:01 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	44 min
May 9, 4:02 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Major	30 min
May 9, 4:05 PM CDT	Tornado Warning	OUN	Garvin, Murray	25 min
May 9, 4:07 PM CDT	Special Weather Statement	OUN	Cleveland	23 min
May 9, 4:12 PM CDT	Special Weather Statement	OUN	Pottawatomie	48 min
May 9, 4:14 PM CDT	Special Weather Statement	OUN	Oklahoma	46 min
May 9, 4:25 PM CDT	Special Weather Statement	OUN	Garfield	20 min
May 9, 4:25 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	50 min
May 9, 4:27 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Garvin, Murray	33 min
May 9, 4:31 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	44 min
May 9, 4:34 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	56 min
May 9, 4:40 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	50 min
May 9, 4:41 PM CDT	Special Weather Statement	OUN	Grant	34 min
May 9, 4:52 PM CDT	Special Weather Statement	OUN	Noble	38 min
May 9, 4:52 PM CDT	Tornado Warning EmergencyTornado observedConsiderable damage threat	OUN	Garvin, Murray, Pontotoc	23 min
May 9, 4:55 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	50 min
May 9, 5:00 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Marshall	45 min
May 9, 5:04 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kay, Noble	41 min
May 9, 5:10 PM CDT	Tornado Warning	OUN	Bryan, Marshall	35 min
May 9, 5:12 PM CDT	Tornado Warning EmergencyTornado observedCatastrophic damage threat	OUN	Murray, Pontotoc	33 min
May 9, 5:18 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	57 min
May 9, 5:19 PM CDT	Tornado Warning	OUN	Atoka, Coal, Johnston	26 min
May 9, 5:20 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	40 min
May 9, 5:23 PM CDT	Tornado Warning Tornado observed	OUN	Cleveland, Pottawatomie	37 min
May 9, 5:32 PM CDT	Special Weather Statement	OUN	Grant	28 min
May 9, 5:34 PM CDT	Tornado Warning	OUN	Bryan	26 min
May 9, 5:35 PM CDT	Tornado Warning	OUN	Noble, Payne	25 min
May 9, 5:41 PM CDT	Tornado Warning	OUN	Atoka, Coal	34 min
May 9, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	48 min
May 9, 5:44 PM CDT	Severe Thunderstorm Warning	OUN	Grant	46 min
May 9, 5:52 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	10 min
May 9, 5:55 PM CDT	Tornado Warning	OUN	Noble, Payne	50 min
May 9, 5:57 PM CDT	Tornado Warning	OUN	Bryan	33 min
May 9, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	47 min
May 9, 6:09 PM CDT	Tornado Warning Tornado observed	OUN	Atoka, Coal	36 min
May 9, 6:19 PM CDT	Tornado Warning Tornado observed	OUN	Noble, Payne	26 min
May 9, 6:24 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	66 min
May 9, 6:47 PM CDT	Tornado Warning	OUN	Grant, Kay	43 min
May 9, 4:33 AM CDT	Special Weather Statement	OUN	Archer, Clay	42 min
May 9, 5:02 AM CDT	Special Weather Statement	OUN	Clay	28 min

Nearby

Special Weather Statements in Oklahoma, 2016 Every special weather statement in 2016

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.