
Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EST Tue Jan 13 2026
VAZ046-140900-
RAWS 441101
37.39N 78.80W Elev. 804 ft
201 AM EST Tue Jan 13 2026
Date 01/12/26 Tue 01/13/26 Wed 01/14/26 Thu
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 30 54 36 54 26
TEMP 32 31 42 52 53 46 44 41 39 37 46 54 53 47 44 39 32 27
DEWPT 21 21 25 26 27 27 27 27 28 29 33 34 35 36 36 28 20 13
MIN/MAX RH 68 34 73 47 74
RH 63 66 50 36 36 47 51 57 64 72 60 46 50 65 73 64 61 55
WIND DIR W SW SW SW SW SW SW SW SW SW SW SW SW W W W NW NW
WIND SPD 5 5 6 10 10 9 10 8 6 6 6 8 6 5 8 9 10 10
WIND GUST 20 21 21 19 17 20 21 21
CLOUDS CL SC FW FW FW FW FW FW SC SC B1 B1 B2 B2 B2 B1 SC SC
CLOUDS(%) 5 34 6 14 9 22 14 20 27 31 67 67 85 86 76 63 47 27
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 20 20
RAIN S S S S
MIX HGT <1 <1 <1 2 2 <1 <1 <1 <1 <1 <1 3 3 <1 <1 2 2 2
T WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW W W NW NW NW NW
T WIND SPD 3 4 10 14 20 11 10 9 9 8 11 17 17 20 24 25 20 23
DISPERSION PR PR FR PR PR PR PR PR FR
ADI 2 4 10 37 50 8 7 6 4 6 14 38 39 14 22 34 28 62
MAX LVORI 3 3 2 1 1 2 2 3 3 3 2 1 1 3 3 3 2 1
STABILITY F C C C C E E E F C D D D E D D D C
CEILING None None None None 9800 8700 4900 None
STA PRES 29.42 29.23 29.14 29.06 28.98 28.92 28.99 29.09
Date 01/15Fri 01/16/26Sat 01/17/26Sun 01/18/26Mon 01/19/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 35 17 38 26 44 23 37 19 36
TEMP 33 26 22 19 35 34 30 27 42 38 30 24 35 30 24 20 34 31
DEWPT 6 4 4 6 6 11 15 18 24 23 18 15 14 14 10 9 7 11
RH 31 38 45 56 29 38 53 68 48 54 60 68 41 51 54 62 32 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL FW FW SC FW SC B1 SC SC SC SC SC FW FW FW FW
POP 12HR 5 0 5 5 20 5 20 5 5
RAIN S
SNOW S S S
$$
This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.
Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)
DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew point temperature
MIN/MAX RH OR MAX/MIN RH(%).........Maximum/Minimum humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
TYPE...
RAIN...........Rain
RAIN SHWRS.....Rain showers
TSTMS..........Thunderstorms
DRIZZLE........Drizzle
SNOW...........Snow
SNOWSHWRS......Snow showers
SLEET..........Sleet
FRZG RAIN......Freezing rain
FRZG DRZL......Freezing drizzle
COVERAGE...
IS.............Isolated
SC.............Scattered
NM.............Numerous
O..............Occasional
S..............Slight chance
C..............Chance
L..............Likely
WD.............Widespread
D..............Definite
AR.............Areas
PA.............Patchy
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure
Day 4 Through 7...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew Point temperature
RH(%)...............................Relative Humidity
WIND SPD(MPH).......................Wind Speed
Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions