National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EST Tue Jan 20 2026

VAZ046-202100-
RAWS 441101
37.39N  78.80W Elev. 804 ft
631 AM EST Tue Jan 20 2026

Date             Tue 01/20/26            Wed 01/21/26            Thu 01/22/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19

MAX/MIN TEMP                 33          17          43          32          53
TEMP             20 25 32 33 25 21 19 17 17 29 40 42 38 36 36 35 34 43 51 52 43
DEWPT            -1 -4 -8 -8 -6 -6 -7 -6 -4  0  6 11 14 16 20 22 25 31 29 26 25
MAX/MIN RH                   16          39          23          69          36
RH               39 27 17 16 25 29 30 35 38 28 24 28 37 43 52 59 69 62 42 36 49
WIND DIR          W  W  W  W  W  W  W  S SW  S  S  S  S SW SW SW SW  W  W  W  W
WIND SPD          5 10 10  8  2  2  2  2  2  6 11 11  9 10 10  9  6  9 10  8  4
WIND GUST                                      23 23 21 23 20 19               
CLOUDS           CL CL CL FW CL CL CL CL CL FW FW SC SC SC B1 B1 FW FW FW SC FW
CLOUDS(%)         3  4  3  6  4  2  3  5  5  7 12 26 40 48 57 52 22 18 23 27 18
VSBY             10 10 10 10 10 10 10 10 10 10 10 10 10 10 10  7               
POP 12HR                      0           0           0          10          10
MIX HGT          <1  3  4  5 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  2  3  4 <1
T WIND DIR        W  W  W  W  W  W SW  S  S  S  S  S  S SW SW SW SW  W  W  W SW
T WIND SPD       14 13 14 16  6  2  2  2  2 14 19 25 11 11 10  8  5 18 16 14  3
DISPERSION                   VP VP VP VP             PR FR FR PR             VP
ADI              11 40 54 64  3  1  1  1  2 32 46 60  8 10  9  7  4 51 54 53  2
MAX LVORI         2  1  1  1  2  2  2  2  2  1  1  1  2  2  2  3  3  1  1  1  2
STABILITY         C  C  C  C  G  G  G  G  B  C  D  D  E  D  D  D  C  C  C  C  F
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            29.66 29.68 29.75 29.73 29.70 29.54 29.48 29.44 29.49 29.47


Date          Fri 01/23/26Sat 01/24/26Sun 01/25/26Mon 01/26/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly     01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19

MIN/MAX TEMP       28      44      17      24      14      28       8      30
TEMP          33 29 43 37 27 19 23 20 17 14 25 22 13  9 29 19
DEWPT         23 22 19 18 13  8  5  4  6 10 12 11  6  3  9  6
RH            66 75 38 46 55 61 45 49 61 84 57 62 73 76 42 56
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC B1 B2 B2 B2 OV OV OV OV B2 B1 SC SC FW FW
POP 12HR           10      20      30      60      80      60      20      10
RAIN                 S                                       
SNOW                 S  S     C  C  L  L  D  L  C  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