National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 AM EST Sun Jan 18 2026

NCZ003-190900-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
101 AM EST Sun Jan 18 2026

Date           01/17/26      Sun 01/18/26            Mon 01/19/26            Tue
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                 28          35          19          41          14
TEMP                      35 30 31 33 34 28 25 22 20 22 30 38 40 32 24 21 18 15
DEWPT                     28 24 19 15 13 13 12 12 11 11 13 12 10  9  6  3  1 -1
MIN/MAX RH                   81          42          67          29          50
RH                        75 78 61 47 41 53 57 65 67 62 49 34 28 37 45 45 46 48
WIND DIR                  NW NW NW NW NW  W  W SW SW SW  W  W  W  W NW NW NW NW
WIND SPD                   2  4  4  4  4  1  1  1  2  2  5  8  6  3  3  2  2  3
WIND GUST                                            12 17 19 19 14 13 13 13   
CLOUDS                    OV OV OV OV FW FW FW FW FW FW FW FW CL FW SC SC FW FW
CLOUDS(%)                100100100 94 13  6  6  6  8  8  6  7  5 15 30 42 24  9
VSBY                       9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     60          20           0           0           0
RAIN                                                                           
SNOW                       C     S                                             
MIX HGT                   <1  1  2  3  4  1 <1 <1 <1  1  4  4  4  1            
T WIND DIR                 W NW NW NW NW NW  W  W SW  W  W  W  W NW            
T WIND SPD                 6  9 12 12 17 12  5  5  4  6 21 20 19 14            
DISPERSION                VP             VP VP VP VP             VP VP VP VP   
ADI                        3 16 27 31 75  6  3  3  2  9 78 81 75  7            
MAX LVORI                  4  3  2  1  1  2  3  3  3  3  1  1  1  2            
STABILITY                  F  C  D  D  B  G  G  G  G  B  C  C  C  G            
CEILING                    3700  2600  None  None  None  None  None  None      
STA PRES                  28.10 28.08 28.03 28.07 28.05 28.09 28.13            


Date           01/20Wed 01/21/26Thu 01/22/26Fri 01/23/26Sat 01/24/26
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       34      15      42      25      47      22      46      30      50
TEMP          32 27 19 18 39 36 31 29 44 34 26 22 43 38 33 33 47 45
DEWPT         -6  3  4  6  9 18 20 24 24 18 15 13 19 23 24 26 36 35
RH            18 35 51 59 28 47 63 81 45 51 62 68 38 54 69 75 65 68
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW CL CL FW FW SC B1 B1 SC FW FW FW FW SC B1 B2 B2 B2
POP 12HR            0       0       0      10      10       5       5      20      40
RAIN                                                        S  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