Alert archive / Oklahoma / Tornado Warnings in 2009

Tornado Warning 5, NWS Norman, OK

February 10, 2009Canadian County, Oklahoma

NWS Norman, OK issued this tornado warning at Feb 10, 2009, 3:32 PM CST for Canadian County, Oklahoma. It was in force for 28 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 10, 2009, 3:32 PM CST (21:32 UTC)
Expired: Feb 10, 2009, 4:00 PM CST
In force: 28 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Canadian County, OK

The radar

The Norman radar (KTLX), 52 km from the middle of the area, began a volume at 21:34 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Feb 10, 12:49 PM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.5 hours before the alert went out and 51 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: 2044 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS54 KOUN 102132
TOROUN
OKC017-102200-
/O.NEW.KOUN.TO.W.0005.090210T2132Z-090210T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
332 PM CST TUE FEB 10 2009

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CANADIAN COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 400 PM CST

* AT 332 PM CST...DOPPLER RADAR AND STORM SPOTTERS OBSERVED A TORNADO
  10 MILES SOUTHWEST OF YUKON...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE NORTHWESTERN OKLAHOMA CITY...
  PIEDMONT...RICHLAND AND YUKON.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 129 AND 137.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

A TORNADO MAY FORM AT ANYTIME. TAKE COVER NOW. ABANDON MOBILE HOMES
AND VEHICLES. IF POSSIBLE... MOVE TO A BASEMENT OR STORM SHELTER.
OTHERWISE... MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR.
STAY AWAY FROM WINDOWS.

LAT...LON 3567 9779 3562 9767 3535 9779 3539 9794
TIME...MOT...LOC 2132Z 206DEG 39KT 3541 9785

$$
WR

1 follow-up statement

000 
WWUS54 KOUN 102150
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
350 PM CST TUE FEB 10 2009

OKC017-102200-
/O.CON.KOUN.TO.W.0005.000000T0000Z-090210T2200Z/
CANADIAN OK-
349 PM CST TUE FEB 10 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CST FOR EASTERN
CANADIAN COUNTY...

AT 349 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR YUKON...
MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE NORTHWESTERN OKLAHOMA CITY...
  PIEDMONT...RICHLAND AND YUKON.

THE MOST DANGEROUS PART OF THIS STORM WAS OVER SOUTHERN YUKON AT 349 PM.

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

LAT...LON 3545 9775 3551 9785 3567 9779 3562 9767
TIME...MOT...LOC 2149Z 206DEG 33KT 3551 9775

$$
WR
WR

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Feb 10, 1:50 PM CST, 1 hour 42 minutes earlier.

Area forecast discussion, Feb 10, 1:50 PM CST, 1 hour 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
150 PM CST TUE FEB 10 2009

.DISCUSSION...
18Z SOUNDING FROM OUN/FWD INDICATES CAP IS NEARLY ERODED FROM FWD
SOUNDING WHILE SOME WORK IS STILL NEEDED FARTHER NORTH.  SATELLITE
IMAGERY INDICATES LEAD WAVE MOVING ACROSS WESTERN/NORTH TEXAS THIS
AFTERNOON WITH CONVECTION DEVELOPING AHEAD OF THIS FEATURE IN
SOUTHERN AND NORTHERN OKLAHOMA. EXPECT AS MAIN SYSTEM NEARS AND
STRONG 120-130 KT JET LIFTS ACROSS TX/OK THAT DEEP CONVECTION WILL
DEVELOP NEAR A SHARPENING DRYLINE.

LAPS ANALYSIS SHOWS CAPE VALUES BETWEEN 1500 TO NEAR 2000 J/KG
ACROSS PARTS OF WESTERN NORTH TEXAS INTO SOUTHERN OK. STORMS MAY
INITIALLY BE WIDELY SCATTERED BEFORE NUMEROUS STORMS FORM IN A
LINEAR MODE AS STRONGER FORCING OVERSPREADS THE AREA.

SEVERE CONVECTION SHOULD EXIT MOST OF THE CWA BY MIDNIGHT WITH SOME
WRAP AROUND MOISTURE ACROSS NORTHWEST/NORTH CENTRAL OKLAHOMA.  CAA
WILL STRENGTHEN ACROSS NORTHERN OKLAHOMA LATE TONIGHT INTO WEDNESDAY
MORNING.  A WIND ADVISORY MAY BE NEED FOR STRONG NORTHWEST WINDS
ACROSS NW/NC/WC OKLAHOMA FROM NEAR 9Z INTO LATE MORNING WEDNESDAY.

CONDITIONS SHOULD RAPIDLY IMPROVE WEDNESDAY AFTERNOON WITH CLEARING
SKIES AND LESS WIND.

WILL KEEP IN SLIGHT/CHANCE POPS ACROSS MAINLY NORTHERN OKLAHOMA FOR
NEXT WAVE THAT WILL MOVE ACROSS SOUTHERN/CENTRAL PLAINS.  COOLER/COLDER
AIR WILL FILTER INTO THE REGION BEHIND THE SHORTWAVE ON FRIDAY.  TWO
MORE SYSTEM WILL APPROACH THE REGION IN A PROGRESSIVE FLOW.  TIMING
AND AMPLITUDE OF EACH SYSTEM VARIES BETWEEN THE GFS AND EC.  AT THIS
TIME... WILL ADVERTISE THE BEST CHANCE FOR PRECIPITATION TO BE IN THE MONDAY
TO MONDAY NIGHT TIME PERIOD.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  42  62  35  62 /  70  10   0  10
HOBART OK         41  62  36  63 /  40  10   0   0
WICHITA FALLS TX  46  68  37  67 /  40   0   0  10
GAGE OK           36  59  30  60 /  40  10   0   0
PONCA CITY OK     42  54  35  60 /  70  40   0  10
DURANT OK         50  67  39  64 /  90  10   0  10

&&

SIX

Hazardous weather outlook, Feb 10, 11:50 AM CST, 3 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CST TUE FEB 10 2009

OKZ004>048-050>052-TXZ083>090-111300-
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-
1150 AM CST TUE FEB 10 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A MODERATE AND SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH
TONIGHT ACROSS PORTIONS OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE MODERATE RISK AREA IS GENERALLY EAST OF A WICHITA FALLS TO
KINGFISHER TO STILLWATER LINE. THE SLIGHT RISK AREA EXTENDS
WEST OF THE MODERATE AREA AND IS ALONG AND EAST OF A CHEROKEE TO
ALTUS LINE.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM
2 PM UNTIL 11 PM.

IMPACTS...
THE STRONGEST THUNDERSTORMS WILL BE CAPABLE OF PRODUCING WINDS TO
80 MPH AND HAIL TO THE SIZE OF TENNIS BALLS. TORNADOES ARE
POSSIBLE...ESPECIALLY IN THE MODERATE RISK AREA.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS FROM THIS
AFTERNOON UNTIL LATE THIS EVENING.

DISCUSSION...
A STORM SYSTEM IS APPROACHING THE SOUTHERN PLAINS TODAY...
INCREASING THE CHANCE FOR THUNDERSTORMS. THE MOIST AIR IS INCREASING
ACROSS OKLAHOMA AND WILL CONTINUE TO INCREASE DURING THE DAY AS
SOUTH WINDS PREVAIL. THE INCREASED MOISTURE WILL AID IN
DESTABILIZATION OF THE AIRMASS THIS AFTERNOON WITH WIND SHEAR ALSO
EXPECTED TO INCREASE IN ADVANCE OF THE APPROACHING STORM SYSTEM.
THUNDERSTORMS ARE EXPECTED TO DEVELOP DURING THE AFTERNOON AND
EVENING FROM CENTRAL OKLAHOMA INTO NORTH TEXAS ALONG AN EASTWARD
ADVANCING DRYLINE. DAMAGING WINDS ...LARGE HAIL...AND TORNADOES WILL
BE POSSIBLE. THE GREATEST THREAT FOR TORNADOES WILL BE IN THE
MODERATE RISK AREA WHERE MOISTURE AND WIND SHEAR ARE EXPECTED TO BE
MAXIMIZED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY FEB 11.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...90 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...70 PERCENT.

OTHER HAZARDOUS WEATHER...
PARTS OF WESTERN OKLAHOMA AND WESTERN NORTH TEXAS WILL SEE AN ELEVATED
RISK OF WILDFIRES AS A DRYLINE ADVANCES EAST.  GUSTY
SOUTHWEST WINDS WILL DEVELOP BEHIND THE DRYLINE THIS AFTERNOON.
THIS COMBINED WITH WARM TEMPERATURES AND LOW HUMIDITY WILL
RESULT IN INCREASED WILDFIRE POTENTIAL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
NONE.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
WEDNESDAY.

In the hours before

Special weather statement, Feb 10, 3:09 PM CST, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
309 PM CST TUE FEB 10 2009

TXZ085-086-088-089-102130-
WILBARGER TX-WICHITA TX-ARCHER TX-BAYLOR TX-
309 PM CST TUE FEB 10 2009

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR ARCHER...BAYLOR...WICHITA
AND WILBARGER COUNTIES.

A STRONG THUNDERSTORM WAS LOCATED 5 MILES NORTHEAST OF MABELLE AT 309
PM CST...MOVING NORTHEAST AT 35 MPH. A SECOND STRONG STORM WAS JUST
SOUTH OF SEYMOUR.

PEOPLE IN ARCHER...BAYLOR...WICHITA AND WILBARGER COUNTIES...
INCLUDING THE CITY OF SEYMOUR...SHOULD MONITOR THE WEATHER SITUATION
CLOSELY. LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER
CONDITIONS.

CMS

Local storm report, Feb 10, 3:14 PM CST, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
314 PM CST TUE FEB 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 PM     HAIL             4 NW EDMOND             35.69N 97.53W
02/10/2009  M1.00 INCH       OKLAHOMA           OK   AMATEUR RADIO

0300 PM     HAIL             YUKON                   35.50N 97.74W
02/10/2009  E1.75 INCH       CANADIAN           OK   BROADCAST MEDIA

0257 PM     HAIL             INDIAHOMA               34.62N 98.75W
02/10/2009  M1.75 INCH       COMANCHE           OK   EMERGENCY MNGR

&&

CRILEY

Local storm report, Feb 10, 3:17 PM CST, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
317 PM CST TUE FEB 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0225 PM     HAIL             YUKON                   35.50N 97.74W
02/10/2009  E2.75 INCH       CANADIAN           OK   PUBLIC

&&

CRILEY

Local storm report, Feb 10, 3:22 PM CST, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
322 PM CST TUE FEB 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0322 PM     HAIL             ANADARKO                35.07N 98.24W
02/10/2009  E1.00 INCH       CADDO              OK   AMATEUR RADIO

&&

SMITH

Local storm report, Feb 10, 3:24 PM CST, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
324 PM CST TUE FEB 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0320 PM     HAIL             ANADARKO                35.07N 98.24W
02/10/2009  E1.75 INCH       CADDO              OK   AMATEUR RADIO

            HAIL LARGER THAN GOLFBALLS STILL ON GROUND AT 325 PM

&&

SMITH

Local storm report, Feb 10, 3:27 PM CST, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
327 PM CST TUE FEB 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0255 PM     HAIL             3 WNW APACHE            34.91N 98.41W
02/10/2009  E1.25 INCH       CADDO              OK   AMATEUR RADIO

            DAMAGE TO A CAR WINDSHIELD

&&

CRILEY

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 10, 1:40 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	50 min
Feb 10, 1:56 PM CST	Severe Thunderstorm Warning	OUN	Comanche, Tillman	49 min
Feb 10, 2:17 PM CST	Tornado Warning	OUN	Canadian, Oklahoma	28 min
Feb 10, 2:29 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Grady	46 min
Feb 10, 2:37 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	38 min
Feb 10, 2:44 PM CST	Tornado Warning	OUN	Logan, Oklahoma	31 min
Feb 10, 2:56 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	49 min
Feb 10, 3:08 PM CST	Tornado Warning	OUN	Canadian, Oklahoma	37 min
Feb 10, 3:10 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	50 min
Feb 10, 3:13 PM CST	Tornado Warning	OUN	Logan, Payne	32 min
Feb 10, 3:16 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian	44 min
Feb 10, 3:43 PM CST	Severe Thunderstorm Warning	OUN	Logan	17 min
Feb 10, 3:44 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	46 min
Feb 10, 3:45 PM CST	Tornado Warning	OUN	Payne	30 min
Feb 10, 3:59 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa, Tillman	17 min
Feb 10, 4:01 PM CST	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Payne	44 min
Feb 10, 4:03 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Logan, Oklahoma	27 min
Feb 10, 4:12 PM CST	Severe Thunderstorm Warning	OUN	Cotton, Tillman	48 min
Feb 10, 4:16 PM CST	Areal Flood Advisory	OUN	Canadian, Logan, Oklahoma, Payne	3 hr
Feb 10, 4:20 PM CST	Severe Thunderstorm Warning	OUN	Payne	40 min
Feb 10, 4:26 PM CST	Severe Thunderstorm Warning	OUN	Comanche	34 min
Feb 10, 4:29 PM CST	Severe Thunderstorm Warning	OUN	Canadian, Logan, Oklahoma	61 min
Feb 10, 4:47 PM CST	Severe Thunderstorm Warning	OUN	Logan, Payne	43 min
Feb 10, 4:50 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Grady	40 min
Feb 10, 4:55 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Grady, Stephens	35 min
Feb 10, 5:00 PM CST	Severe Thunderstorm Warning	OUN	Cotton	30 min
Feb 10, 5:17 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Garvin, Grady, McClain, Stephens	43 min
Feb 10, 5:28 PM CST	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	47 min
Feb 10, 5:43 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	47 min

Nearby

Tornado Warnings in Oklahoma, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.