Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Norman, OK

February 1, 2016Seminole County, Oklahoma

NWS Norman, OK issued this special weather statement at Feb 1, 2016, 11:49 PM CST for Seminole County, Oklahoma. It was in force for 26 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: Feb 1, 2016, 11:49 PM CST (05:49 UTC)
Expired: Feb 2, 2016, 12:15 AM CST
In force: 26 min
Issued by: NWS Norman, OK

County Seminole County, OK

The radar

The Norman radar (KTLX), 62 km from the middle of the area, began a volume at 05:36 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, 5.8 hours before the alert went out and 72 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: 1580 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 457 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Feb 1, 9:46 PM CST, 2 hours 3 minutes earlier.

Area forecast discussion, Feb 1, 9:46 PM CST, 2 hours 3 minutes before

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Hazardous weather outlook, Feb 1, 2:55 PM CST, 8 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK ...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
255 PM CST MON FEB 1 2016

OKZ004>048-050>052-TXZ083>090-022100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
255 PM CST MON FEB 1 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...THROUGH TONIGHT...

.THUNDERSTORMS...
THERE WILL BE A CHANCE OF THUNDERSTORMS ACROSS MUCH OF OKLAHOMA
THIS AFTERNOON AND EVENING. A FEW STRONG TO SEVERE STORMS MAY BE
POSSIBLE THIS EVENING ACROSS PORTIONS OF NORTH CENTRAL AND
CENTRAL OKLAHOMA... MAINLY IN AN AREA NORTHEAST OF A LINE FROM
PONCA CITY... TO STILLWATER... TO SHAWNEE AND SEMINOLE. IF A
STRONG TO SEVERE STORM DEVELOPS... WIND GUSTS UP TO 65 MPH AND
HAIL UP TO THE SIZE OF NICKELS WILL BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

.STRONG WINDS...
TUESDAY WILL SEE NORTH WINDS OF 20 TO 30 MPH ACROSS OKLAHOMA AND
WESTERN NORTH TEXAS...WITH GUSTS TO 40 MPH POSSIBLE.

.WIND CHILLS...
WIND CHILLS WEDNESDAY MORNING WILL BE IN THE SINGLE DIGITS AND
TEENS ACROSS THE NORTHERN HALF OF OKLAHOMA.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

In the hours before

Special weather statement, Feb 1, 9:12 PM CST, 2 hours 37 minutes before

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Special weather statement, Feb 1, 9:21 PM CST, 2 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
921 PM CST MON FEB 1 2016

OKZ018-024-020345-
CANADIAN OK-KINGFISHER OK-
921 PM CST MON FEB 1 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL CANADIAN AND
KINGFISHER COUNTIES UNTIL 945 PM CST...

AT 919 PM CST...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
7 MILES WEST OF KINGFISHER TO NEAR OKARCHE...MOVING NORTHEAST AT 35
MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

LAT...LON 3616 9782 3609 9768 3576 9768 3559 9802
      3585 9816
TIME...MOT...LOC 0319Z 228DEG 31KT 3584 9806 3571 9799

..SPEG.

Special weather statement, Feb 1, 9:57 PM CST, 1 hour 52 minutes before

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Special weather statement, Feb 1, 10:30 PM CST, 1 hour 19 minutes before

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Special weather statement, Feb 1, 11:23 PM CST, 26 minutes before

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Special weather statement, Feb 1, 11:49 PM CST, 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
Feb 1, 7:56 PM CST	Special Weather Statement	OUN	Jackson, Tillman	34 min
Feb 1, 8:25 PM CST	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman, Washita	35 min
Feb 1, 9:12 PM CST	Special Weather Statement	OUN	Caddo, Comanche	48 min
Feb 1, 9:21 PM CST	Special Weather Statement	OUN	Kingfisher	24 min
Feb 1, 9:57 PM CST	Special Weather Statement	OUN	Grady, McClain	33 min
Feb 1, 10:30 PM CST	Special Weather Statement	OUN	Cleveland, McClain, Oklahoma	30 min
Feb 1, 11:23 PM CST	Special Weather Statement	OUN	Lincoln, Pottawatomie	22 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.