FNUS71 KRNK 112102
FWSRNK

SPOT FORECAST FOR ALLEGHANY TUNNELS...USFS
NATIONAL WEATHER SERVICE BLACKSBURG VA
502 PM EDT WED APR 11 2012

FORECAST IS BASED ON REQUEST TIME OF 1652 EDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.DISCUSSION...
ANY WIDELY SCATTERED PRECIPITATION IN THE ALLEGHANY HIGHLANDS AND
SOUTHEAST WEST VIRGINIA WILL END BY MIDNIGHT. CLOUDS WILL CLEAR OUT
OVER THE MOUNTAINS BY MORNING.

20 FOOT AND TRANSPORT WINDS WILL DIMINISH TONIGHT AND BE LIGHTER ON
THURSDAY AS HIGH PRESSURE BUILDS IN BUT MOISTURE WILL STILL BE LIMITED.

HUMIDITY LEVELS WILL START TO RECOVER SOME FRIDAY INTO THE WEEKEND AS
THE HIGH SLIDES EAST AND SOUTHWEST RETURN FLOW DEVELOPS. HOWEVER...ON
FRIDAY WITH THE HIGH OVERHEAD WINDS WILL DECOUPLE...ESPECIALLY IN SHELTERED
VALLEYS...SO SMOKE MAY BE TRAPPED IN THE VALLEYS UNTIL THE INVERSION
BREAKS FRIDAY MORNING.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). A SLIGHT CHANCE
                    OF SHOWERS.
MAX TEMPERATURE.....AROUND 40.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 13 TO 14 MPH WITH GUSTS UP TO
                    25 MPH.
CWR (0.01 IN).......20 PERCENT.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....WEST 21 TO 22 MPH.


TIME (EDT)          4 PM
SKY (%).............83
WEATHER COV.........S CHC
WEATHER TYPE........RNSHWR
TSTM COV............
TEMP................40
RH..................40
20 FT WIND..........NW 10
20 FT WIND GUST.....25
CWR.................20

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT)...THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT). A SLIGHT CHANCE
                    OF RAIN SHOWERS EARLY IN THE EVENING. A SLIGHT
                    CHANCE OF SNOW SHOWERS LATE IN THE EVENING.
                    WIDESPREAD FROST AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 26.
MAX HUMIDITY........94 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 13 MPH. GUSTS UP TO 25 MPH
                    EARLY IN THE EVENING.
CWR (0.01 IN).......20 PERCENT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH...BECOMING WEST 5 TO 9
                    MPH AFTER MIDNIGHT.


TIME (EDT)          6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).............79     70     61     50     23     21
WEATHER COV.........S CHC  S CHC         WIDSPD WIDSPD WIDSPD
WEATHER TYPE........RNSHWR RNSHWR NONE   FROST  FROST  FROST
TSTM COV............
TEMP................38     35     33     31     30     28
RH..................49     57     66     74     80     83
20 FT WIND..........NW 10  NW 8   NW 6   NW 6   NW 5   NW 5
20 FT WIND GUST.....25     20     15     15     10     10
CWR.................20     20     10     10     0      0

.THURSDAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT). WIDESPREAD FROST EARLY IN
                    THE MORNING...THEN PATCHY FROST EARLY IN THE
                    MORNING.
MAX TEMPERATURE.....AROUND 51.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 9 MPH.
CWR (0.01 IN).......0 PERCENT.
MIXING HEIGHT.......1900 FT AGL...INCREASING TO 3600 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 5 TO 13 MPH...INCREASING TO 16 TO 21
                    MPH IN THE AFTERNOON.


TIME (EDT)          6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY (%).............15     13     8      7      12     16
WEATHER COV.........WIDSPD PATCHY
WEATHER TYPE........FROST  FROST  NONE   NONE   NONE   NONE
TSTM COV............
TEMP................27     30     37     42     46     49
RH..................88     81     58     46     41     34
20 FT WIND..........W 5    W 4    NW 5   NW 6   NW 7   NW 7
20 FT WIND GUST.....10     5      10     15     15     15
CWR.................0      0      0      0      0      0

$$
FORECASTER...PERRY
REQUESTED BY...RACHEL JONES
TYPE OF REQUEST...WILDFIRE
.TAG 20120411.ALLEG.01/RNK