OKZ004>048-050>052-TXZ083>090-151100-
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-
857 PM CST TUE FEB 14 2012

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

.DAY ONE…TONIGHT…

THUNDERSTORM OUTLOOK…
ISOLATED THUNDERSTORMS ARE POSSIBLE TONIGHT.

DISCUSSION…
A QUICK MOVING TROUGH HAS PRODUCED SCATTERED SHOWERS ACROSS
SOUTHWEST OKLAHOMA THIS EVENING. SHOWERS WILL CONTINUE TO
DEVELOP…ALONG WITH A FEW THUNDERSTORMS…AND MOVE QUICKLY
NORTHEAST OVERNIGHT. UNSTABLE LOW LEVEL AIR WILL LIKELY REMAIN
CAPPED…BUT ELEVATED SHOWERS AND STORMS ARE EXPECTED TO CONTINUE
INTO THE  MORNING HOURS. A FEW OF THE STRONGER STORMS COULD PRODUCE
HAIL… BUT ORGANIZED SEVERE WEATHER IS NOT EXPECTED.

PROBABILITY TABLE…
VALID THROUGH 700 AM CST WEDNESDAY FEB 15.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…50 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…10 PERCENT.

OTHER HAZARDOUS WEATHER…
AREAS OF DENSE FOG ARE LIKELY THROUGH EARLY WEDNESDAY MORNING.
PLEASE REFER TO THE FOG ADVISORY PRODUCT FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN…WEDNESDAY THROUGH MONDAY…

THUNDERSTORM OUTLOOK…
AN UPPER LEVEL TROUGH AND ASSOCIATED PACIFIC COLD FRONT WILL TRACK
ACROSS OKLAHOMA ON WEDNESDAY. SCATTERED THUNDERSTORMS ARE
EXPECTED… ESPECIALLY IN NORTH CENTRAL…CENTRAL…AND SOUTHEAST
OKLAHOMA. SOME SMALL HAIL IS POSSIBLE…BUT THE RISK OF SEVERE
WEATHER IS LOW.

OTHER HAZARDOUS WEATHER…
AFTER THE PACIFIC FRONT MOVES THROUGH ON WEDNESDAY…FIRE WEATHER
CONDITIONS WILL BECOME SOMEWHAT ELEVATED…AS MILD…DRY…AND GUSTY
WEST WINDS ARE FORECAST ACROSS SOUTHWEST OKLAHOMA AND MUCH OF
WESTERN NORTH TEXAS.

OKZ004>048050>052-TXZ083>090-150400-
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR- MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
851 PM CST TUE FEB 14 2012

.REGIONAL WEATHER DISCUSSION…
AT 845 PM…SCATTERED HIGH BASED SHOWERS WERE MOVING EASTWARD INTO
PARTS OF WESTERN NORTH TEXAS AND SOUTHWEST OKLAHOMA. IN ADDITION
AREAS OF LOW CLOUDS AND SOME PATCHY FOG WAS DEVELOPING FROM
NORTHWEST INTO CENTRAL AND SOUTHEAST OKLAHOMA.

THE SHOWERS…AND POSSIBLY AN ISOLATED THUNDERSTORM…WILL CONTINUE
THIS EVENING IN ADVANCE OF AN UPPER STORM SYSTEM MOVING EASTWARD
THROUGH THE SOUTHERN ROCKIES. PRECIPITATION WILL GENERALLY BE LIGHT.

THE LOW CLOUDS AND FOG WILL CONTINUE TO BECOME MORE WIDESPREAD AS
THE EVENING WEARS ON. A FEW LOCATIONS COULD SEE VISIBILITIES DROP TO
LESS THAN ONE MILE AT TIMES BEFORE MIDNIGHT…WITH LOWER
VISIBILITIES LIKELY TO BECOME MORE COMMON LATER TONIGHT.  A DENSE
FOG ADVISORY IS IN EFFECT FOR MUCH OF CENTRAL AND NORTHERN OKLAHOMA
AFTER MIDNIGHT.

An upper-level trough will move across the region on Wednesday.

 This system may bring some rain and snow to the Oklahoma Panhandle

and the northwest half of the Texas Panhandle. Northwest winds of

20 to 30 mph with higher gusts will be found behind a cold front.

HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
CANADIAN-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF…BUFFALO…ALVA…CHEROKEE…MEDFORD…
PONCA CITY…ARNETT…WOODWARD…FAIRVIEW…ENID…PERRY…
CHEYENNE…TALOGA…WEATHERFORD…CLINTON…WATONGA…
KINGFISHER…GUTHRIE…STILLWATER…YUKON…EL RENO…MUSTANG…
OKLAHOMA CITY…CHANDLER
 TUE FEB 14 2012

…DENSE FOG ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST
WEDNESDAY…

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A DENSE FOG
ADVISORY…WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST
WEDNESDAY.

* VISIBILITY: WIDESPREAD VISIBILITIES LESS THAN A QUARTER MILE ARE
  EXPECTED.

* IMPACTS: THE COMBINATION OF DARKNESS AND LOW VISIBILITIES WILL
  MAKE DRIVING HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

IF YOU HAVE TO DRIVE…SLOW DOWN…USE YOUR LOW BEAM HEADLIGHTS…
AND LEAVE PLENTY OF SPACE BETWEEN YOU AND OTHER VEHICLES.

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

.DAY ONE…THIS AFTERNOON AND TONIGHT…

THUNDERSTORM OUTLOOK…
ISOLATED THUNDERSTORMS ARE POSSIBLE TONIGHT.

DISCUSSION…
A QUICK MOVING TROUGH WILL APPROACH TONIGHT…BRINGING A CHANCE OF
RAIN. UNSTABLE LOW LEVEL AIR WILL LIKELY REMAIN CAPPED…BUT
SCATTERED SHOWERS ROOTED ALOFT COULD YIELD A FEW CLOUD TO GROUND
LIGHTNING STRIKES. SEVERE WEATHER IS NOT EXPECTED.

PROBABILITY TABLE…
VALID THROUGH 700 AM CST WEDNESDAY FEB 15.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…30 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…5 PERCENT.

OTHER HAZARDOUS WEATHER…
VISIBILITIES WILL CONTINUE TO IMPROVE EARLY THIS AFTERNOON AS THE
FOG CONTINUES TO DISSIPATE.

.DAYS TWO THROUGH SEVEN…WEDNESDAY THROUGH MONDAY…

THUNDERSTORM OUTLOOK…
AN UPPER LEVEL TROUGH AND ASSOCIATED PACIFIC COLD FRONT WILL TRACK
ACROSS OKLAHOMA ON WEDNESDAY. SCATTERED THUNDERSTORMS ARE
EXPECTED… ESPECIALLY IN NORTH CENTRAL…CENTRAL…AND SOUTHEAST
OKLAHOMA. SOME SMALL HAIL IS POSSIBLE…BUT THE RISK OF SEVERE
WEATHER IS LOW.

OTHER HAZARDOUS WEATHER…
AFTER THE PACIFIC FRONT MOVES THROUGH ON WEDNESDAY…FIRE WEATHER
CONDITIONS WILL BECOME SOMEWHAT ELEVATED…AS MILD…DRY…AND GUSTY
WEST WINDS ARE FORECAST.

.REGIONAL WEATHER DISCUSSION…
AREAS OF FOG WILL CONTINUE TO DISSIPATE EARLY THIS AFTERNOON. SOME
PATCHES OF DENSE FOG MAY STILL PERSIST THROUGH 1 PM ACROSS PARTS OF
CENTRAL AND WESTERN OKLAHOMA. DRIVERS STILL NEED TO BE CAUTIOUS AS
VISIBILITY COULD CHANGE QUICKLY. VISIBILITIES WILL CONTINUE TO
IMPROVE THROUGH THE EARLY AFTERNOON HOURS.

MEANWHILE… TEMPERATURES CONTINUE TO WARM ACROSS OKLAHOMA AND
WESTERN NORTH TEXAS… WITH TEMPERATURES ABOVE FREEZING ACROSS THE
AREA. TEMPERATURES ARE EXPECTED TO WARM INTO THE 40S ACROSS PARTS OF
NORTHERN OKLAHOMA… TO THE 50S AND 60S ALONG THE RED RIVER.

A look at the development of the fog, freezing fog from Gary McManus, Oklahoma Climatological Survey 

1. Light winds prevent any of that heat radiating to space to mix back down towards the surface, and the surface is allowed to cool quite effectively.

Light winds are a key component in the formation of radiation fog (and also keeping it around).

2. The air temperature cools to its condensation point (or dewpoint).

3. The Relative Humidity where the air temperature has reached its dewpoint will be 100 percent.

4. Now for the final ingredient … temperatures at or below 32 degrees. If the air is at the freezing point or below, the fog that does form will freeze on exposed surfaces (such as roads), and a full-fledged freezing fog event is born.

Low-lying areas can be colder than the surrounding terrain as that colder and more dense air sinks to the lowest available point, so even an above normal reading on the map can be misleading.

As the sun climbs higher in the sky and starts to warm things up, the air will start to mix a bit and the temperature will rise above the condensation point.

At that point, the fog will start to “burn off” as the water droplets evaporate back into the air.

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-
 TUE FEB 14 2012

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

.DAY ONE…TODAY AND TONIGHT…

THUNDERSTORM OUTLOOK…
ISOLATED THUNDERSTORMS ARE POSSIBLE TONIGHT.

DISCUSSION…
A QUICK MOVING TROUGH WILL APPROACH TONIGHT…BRINGING A CHANCE OF
RAIN. UNSTABLE LOW LEVEL AIR WILL LIKELY REMAIN CAPPED…BUT
SCATTERED SHOWERS ROOTED ALOFT COULD YIELD A FEW CLOUD TO GROUND
LIGHTNING STRIKES. SEVERE WEATHER IS NOT EXPECTED.

PROBABILITY TABLE…
VALID THROUGH 700 AM CST WEDNESDAY FEB 15.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…LESS THAN 40 PERCENT.

OTHER HAZARDOUS WEATHER…
DENSE FOG AND FREEZING FOG WILL GREATLY LIMIT VISIBILITY THIS
MORNING…AND MAY CREATE SLICK SPOTS ON ROADS…SIDEWALKS…AND
PARKING LOTS. PLEASE REFER TO THE FOG ADVISORIES PRODUCT FOR DETAILS.

.DAYS TWO THROUGH SEVEN…WEDNESDAY THROUGH MONDAY…

THUNDERSTORM OUTLOOK…
AN UPPER LEVEL TROUGH AND ASSOCIATED PACIFIC COLD FRONT WILL TRACK
ACROSS OKLAHOMA ON WEDNESDAY. SCATTERED THUNDERSTORMS ARE
EXPECTED… ESPECIALLY IN NORTH CENTRAL…CENTRAL…AND SOUTHEAST
OKLAHOMA. SOME SMALL HAIL IS POSSIBLE…BUT THE RISK OF SEVERE
WEATHER IS LOW.

OTHER HAZARDOUS WEATHER…
AFTER THE PACIFIC FRONT MOVES THROUGH ON WEDNESDAY…FIRE WEATHER
CONDITIONS WILL BECOME SOMEWHAT ELEVATED…AS MILD…DRY…AND GUSTY
WEST WINDS ARE FORECAST.

URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE TULSA OK
610 AM CST TUE FEB 14 2012

OKZ060-061-141600-
/O.CAN.KTSA.FG.Y.0004.000000T0000Z-120214T1600Z/
/O.EXA.KTSA.ZF.Y.0002.000000T0000Z-120214T1600Z/
TULSA-ROGERS-
610 AM CST TUE FEB 14 2012

…FREEZING FOG ADVISORY IN EFFECT UNTIL 10 AM CST THIS MORNING…
…DENSE FOG ADVISORY IS CANCELLED…

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A FREEZING FOG
ADVISORY…WHICH IS IN EFFECT UNTIL 10 AM CST THIS MORNING…

FOR THE FOLLOWING COUNTIES…

* IN OKLAHOMA…ROGERS AND TULSA.

HAZARDOUS WEATHER…
* AREAS OF FREEZING FOG WILL CONTINUE ACROSS THE AREA THROUGH
   MID-MORNING.

IMPACTS…
* VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER
   MILE AND A LIGHT GLAZE MAY FORM ON ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…
* IF DRIVING…SLOW DOWN…USE YOUR HEADLIGHTS…AND LEAVE PLENTY
   OF DISTANCE AHEAD OF YOU.

DEFINITION…
* A FREEZING FOG ADVISORY MEANS AREAS OF FREEZING FOG ARE EXPECTED
   OR ARE OCCURRING.

* STAY TUNED TO NOAA WEATHER RADIO…COMMERCIAL RADIO OR TELEVISION
   FOR THE LATEST INFORMATION CONCERNING THIS WEATHER EVENT.
   ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT:
   WEATHER.GOV/TULSA.

&&

$$

OKZ066-067-070-071-073-141600-
/O.CON.KTSA.FG.Y.0004.000000T0000Z-120214T1600Z/
OKMULGEE-WAGONER-MUSKOGEE-MCINTOSH-PITTSBURG-
610 AM CST TUE FEB 14 2012

…DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING…

A DENSE FOG ADVISORY IS IN EFFECT…

FOR THE FOLLOWING COUNTIES…

* IN OKLAHOMA…WAGONER…PITTSBURG…MCINTOSH…MUSKOGEE AND
   OKMULGEE.

HAZARDOUS WEATHER…
* AREAS OF DENSE FOG WILL CONTINUE TO ACROSS NORTHEAST OKLAHOMA THROUGH
   MID-MORNING.

IMPACTS…
* VISIBILITIES ARE EXPECTED TO BE REDUCED TO LESS THAN ONE QUARTER
   MILE BY THE DENSE FOG…CREATING HAZARDOUS DRIVING CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…
* IF DRIVING…SLOW DOWN…USE YOUR LOW BEAM HEADLIGHTS…AND
   LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

* STAY TUNED TO NOAA WEATHER RADIO…COMMERCIAL RADIO OR TELEVISION
   FOR THE LATEST INFORMATION CONCERNING THIS WEATHER EVENT.
   ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT:
   WEATHER.GOV/TULSA.

&&

$$

OKZ054>056-059-064-065-141600-
/O.CON.KTSA.ZF.Y.0002.000000T0000Z-120214T1600Z/
OSAGE-WASHINGTON OK-NOWATA-PAWNEE-CREEK-OKFUSKEE-
610 AM CST TUE FEB 14 2012

…FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS
MORNING…

A FREEZING FOG ADVISORY IS IN EFFECT…

FOR THE FOLLOWING COUNTIES…

* IN OKLAHOMA…OKFUSKEE…CREEK…WASHINGTON…OSAGE…NOWATA
   AND PAWNEE.

HAZARDOUS WEATHER…
* AREAS OF FREEZING FOG WILL CONTINUE ACROSS THE AREA THROUGH
   MID-MORNING.

IMPACTS…
* VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER
   MILE AND A LIGHT GLAZE MAY FORM ON ROADWAYS.

PRECAUTIONARY/PREPAREDNESS ACTIONS…
* IF DRIVING…SLOW DOWN…USE YOUR HEADLIGHTS…AND LEAVE PLENTY
   OF DISTANCE AHEAD OF YOU.

* STAY TUNED TO NOAA WEATHER RADIO…COMMERCIAL RADIO OR TELEVISION
   FOR THE LATEST INFORMATION CONCERNING THIS WEATHER EVENT.
   ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT:
   WEATHER.GOV/TULSA.