Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EST Sun Jan 18 2026
VAZ024-190900-
RAWS 441631
37.63N 79.51W Elev. 865 ft
501 PM EST Sun Jan 18 2026
Date 01/18/26 Mon 01/19/26 Tue 01/20/26 Wed
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 22 39 15 32 13
TEMP 31 25 23 22 22 32 39 38 29 25 21 18 16 23 30 31 25 20 17 15 14
DEWPT 12 11 11 10 10 11 10 8 6 4 1 -1 -3 -4 -6 -6 -3 -1 -1 1 2
MIN/MAX RH 61 28 45 19 59
RH 45 55 59 59 59 41 30 28 37 40 41 42 42 30 20 19 29 39 44 53 58
WIND DIR NW W W W W W W W W W W W W W W W W W W W S
WIND SPD 4 2 2 3 4 9 12 12 9 5 3 3 3 6 8 5 2 1 1 1 1
WIND GUST 14 23 26 26 24 20 17 16 16 19 19 16
CLOUDS FW CL CL FW FW FW FW FW FW FW FW FW CL CL CL CL CL CL CL FW FW
CLOUDS(%) 8 5 5 7 6 6 7 8 7 9 15 16 5 4 5 4 3 3 4 6 7
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 1 4 4 4 1 2 2 2 2 3 5 5 <1
T WIND DIR NW W W SW SW W W W W W W W W W W W W
T WIND SPD 18 12 8 6 8 24 24 24 23 21 14 13 14 26 24 19 11
DISPERSION VP VP VP VP PR PR VP VP VP VP VP VP
ADI 8 6 4 3 12 87 95 93 10 10 7 6 32 92 99 78 5
MAX LVORI 2 3 3 3 2 1 1 1 2 2 2 2 1 1 1 1 2
STABILITY G G G G B C C C F F G G B C C C G
CEILING None None None None None None None None None
STA PRES 28.40 28.38 28.42 28.49 28.62 28.68 28.76 28.81
Date 01/21Thu 01/22/26Fri 01/23/26Sat 01/24/26Sun 01/25/26
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 43 28 47 20 43 24 41 22 33
TEMP 39 36 30 31 45 34 26 21 41 36 29 25 38 35 28 22 31 26
DEWPT 7 14 19 24 25 15 11 9 11 15 17 18 21 21 19 15 11 8
RH 26 40 63 75 45 45 52 59 29 42 60 74 50 56 68 74 43 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B1 FW FW FW SC SC SC SC B2 B2 B1 B1 B1 B1
POP 12HR 0 20 20 5 5 20 40 40 40
RAIN S C C S
SNOW S S C C C C C C
$$
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