Wyoming Fire Weather Zone 414

.DISCUSSION...

...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER
ZONES 140...414...415...AND 416)...

A LARGE UPPER LEVEL DISTURBANCE IN THE PACIFIC NORTHWEST AND A WEAK
SURFACE LOW THAT WILL MOVE INTO WESTERN WYOMING WILL START TO AFFECT
THE REGION AND BRING BETTER CHANCES FOR SHOWERS AND THUNDERSTORMS TO
THE REGION...SOME OF WHICH COULD BE QUITE STRONG. WINDS WILL BE OUT
OF THE SOUTH TODAY....WITH SOME AFTERNOON GUSTS TO AROUND 25 MPH AT
HIGH ELEVATIONS. THE CHANCE OF THUNDERSTORMS WILL LINGER INTO
THURSDAY AS WELL...ESPECIALLY ACROSS NORTHERN AREAS.

...RAWLINS DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278...
AND 279)...

A LARGE UPPER LEVEL DISTURBANCE...MOVING INTO THE PACIFIC
NORTHWEST...WILL BEGIN TO AFFECT THE FORECAST AREA AND BRING
INCREASED CHANCES FOR AFTERNOON AND EVENING SHOWERS AND
THUNDERSTORMS...SOME OF WHICH COULD BE LOCALLY STRONG. A GUSTY SOUTH
BREEZE WILL ALSO DEVELOP IN THE AFTERNOON. ON THURSDAY EXPECT DRY
AND WARMER WEATHER WITH GUSTY SOUTHERLY WINDS.

...CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276...
282...283...285...286...287...288...AND 289)...

A LARGE UPPER LEVEL DISTURBANCE MOVING INTO THE PACIFIC NORTHWEST
WILL BEGIN TO AFFECT THE FORECAST AREA TODAY AND BRING INCREASED
CHANCES FOR AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS...SOME
OF WHICH COULD BE LOCALLY STRONG. ADDITIONALLY...THERE COULD BE A
PROLONGED PERIOD OF SHOWERS IN MUCH OF THE REGION THAT COULD PERSIST
INTO THURSDAY MORNING...ESPECIALLY IN AND NEAR FIRE ZONES 275 AND
276. THE CHANCE OF THUNDERSTORMS WILL LINGER INTO THURSDAY AS
WELL...MAINLY NORTH OF THE OWL CREEK RANGE. SOUTHERN ZONES WILL HAVE
A GUSTY SOUTHERLY BREEZE DEVELOP THURSDAY AFTERNOON.

...CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 280...281...
285...289...AND 300)...

A LARGE DISTURBANCE IN THE NORTHWEST PACIFIC AREA  WILL BEGIN TO
AFFECT THE REGION TODAY AND TURN LOW LEVEL WINDS OUT THE
SOUTHEAST...INCREASING HUMIDITIES...AND BRINGING A BETTER CHANCE FOR
AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS...SOME OF WHICH
COULD BE LOCALLY STRONG. MOST THUNDERSTORMS WILL END WEDNESDAY
NIGHT. ON THURSDAY...THE CHANCE OF THUNDERSTORMS WILL LESSEN A BIT
BUT STILL BE AROUND...ESPECIALLY ON THE EASTERN SLOPES OF THE BIG
HORN RANGE. IN ADDITION...A GUSTY SOUTH TO SOUTHEASTERLY WIND WILL
DEVELOP IN THE AFTERNOON.

...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
249 AM MDT WED MAY 22 2013

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SNOW SHOWERS UNTIL
                    1200. ISOLATED RAIN SHOWERS. ISOLATED
                    THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS
                    MAY PRODUCE GUSTY WINDS AND SMALL HAIL AFTER
                    1200.
MAX TEMPERATURE.....61-70.
   24 HR TREND......4 DEGREES WARMER.
MIN HUMIDITY........24-30 PERCENT.
   24 HR TREND......6 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS 10 TO 15 MPH WITH HIGHER GUSTS.
RIDGE TOP WINDS.....SOUTH 15 TO 20 MPH.
LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH UNTIL 0900...THEN SOUTH
                    AROUND 20 MPH UNTIL 1200...THEN AROUND 30 MPH.
MIXING HEIGHT.......3000-5500 FT AGL UNTIL 1200...THEN 5500-8000 FT
                    AGL.
SMOKE DISPERSAL.....FAIR TO GOOD (56000-76000 KNOT-FT) UNTIL
                    1200...THEN VERY GOOD (126000-146000 KNOT-FT).
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED THUNDERSTORMS UNTIL
                    2400. ISOLATED RAIN SHOWERS. SOME THUNDERSTORMS
                    MAY PRODUCE GUSTY WINDS AND SMALL HAIL UNTIL
                    2400.
MIN TEMPERATURE.....35-40.
   24 HR TREND......UNCHANGED.
MAX HUMIDITY........76-82 PERCENT.
   24 HR TREND......2 PERCENT DRIER.
HUMIDITY RECOVERY...EXCELLENT.
20-FOOT WINDS.......SOUTH WINDS 10 TO 15 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH.
LAL.................3 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH UNTIL 2100...THEN NORTH
                    AROUND 5 MPH UNTIL 2400...THEN NORTHWEST.
MIXING HEIGHT.......6000-8500 FT AGL UNTIL 2400...THEN 3000-5500 FT
                    AGL.
SMOKE DISPERSAL.....GOOD TO VERY GOOD (82000-102000 KNOT-FT) UNTIL
                    2400...THEN POOR (6000-26000 KNOT-FT).
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS AFTER 1200.
MAX TEMPERATURE.....58-67.
   24 HR TREND......2 DEGREES COOLER.
MIN HUMIDITY........22-28 PERCENT.
   24 HR TREND......2 PERCENT DRIER.
20-FOOT WINDS.......SOUTH WINDS 10 TO 15 MPH WITH HIGHER GUSTS
                    UNTIL 1200...THEN AROUND 20 MPH WITH GUSTS TO
                    AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 15 MPH UNTIL 1200...THEN AROUND 25
                    MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.ZERO PERCENT.
TRANSPORT WINDS.....EAST AROUND 5 MPH UNTIL 0900...THEN SOUTH
                    AROUND 20 MPH UNTIL 1200...THEN AROUND 35 MPH.
MIXING HEIGHT.......3000-5500 FT AGL UNTIL 1200...THEN 6500-9000 FT
                    AGL.
SMOKE DISPERSAL.....GOOD (64000-84000 KNOT-FT) UNTIL 1200...THEN
                    EXCELLENT (180000-200000 KNOT-FT).
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.


.FORECAST DAYS 3 THROUGH 7......
.THURSDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING. LOWS IN THE LOWER 30S. SOUTHWEST WINDS AROUND
10 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER
50S. SOUTHWEST WINDS AROUND 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID
60S. SOUTHWEST WINDS AROUND 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 60S. SOUTHWEST
WINDS AROUND 10 MPH.
.MEMORIAL DAY THROUGH TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF
SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS
58 TO 63.
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