National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EST Fri Nov 21 2025

NCZ001-220900-
RAWS 310142
36.40N  81.46W Elev. 4608 ft
731 PM EST Fri Nov 21 2025

Date           11/21/25      Sat 11/22/25            Sun 11/23/25            Mon
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                 52          56          39          51          35
TEMP                54 54 53 54 53 53 51 48 46 44 41 39 43 50 48 42 40 39 37 36
DEWPT               52 52 53 53 52 50 48 46 44 42 38 36 34 34 34 34 34 33 30 28
MIN/MAX RH                  100          86          96          53          80
RH                  93 93100 96 96 89 89 93 93 93 89 89 70 54 58 73 79 79 75 72
WIND DIR             W  W  W  W  W  W NW NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD            10 14 18 20 17 14 10  9 10 11 11 11  9 10  9  9  9  8  5  4
CLOUDS              SC B1 B2 B2 B2 SC B1 B1 B1 SC SC FW FW FW CL CL CL FW FW FW
CLOUDS(%)           47 65 79 80 78 42 59 54 51 48 32 24 12  8  5  4  4  8 14 23
VSBY                 8  7  5  4  7 10 10  8  9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     30          40           5           0           0
RAIN SHWRS          IS SC IS SC SC                                             
MIX HGT             <1 <1 <1 <1  2  2  2 <1 <1 <1 <1 <1  1  2  2 <1            
T WIND DIR           W  W  W  W NW NW NW NW NW NW NW NW NW NW NW NW            
T WIND SPD          10 13  9 10 24 19 17 12 12 12  9  9 11 16 18 10            
DISPERSION          FR GD GD             PR FR FR FR             PR PR PR PR   
ADI                  9 12  8 11 41 39 32 11 11 11  6 10 17 41 39  7            
MAX LVORI            6  5  8  6  4  4  4  5  5  5  5  5  3  1  1  4            
STABILITY            D  D  D  D  D  D  D  D  D  D  E  D  C  C  C  E            
CEILING              None   300   300   300  None  None  None  None  None      
STA PRES            26.64 26.60 26.62 26.64 26.71 26.72 26.77 26.75            


Date           11/24Tue 11/25/25Wed 11/26/25Thu 11/27/25Fri 11/28/25
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       51      40      50      47      51      31      39      25      37
TEMP          50 42 42 42 48 47 49 49 48 41 36 31 38 30 28 26 35 28
DEWPT         31 31 32 36 44 45 48 48 45 35 28 21 16 18 16 15 17 18
RH            48 65 67 79 86 93 96 96 89 79 72 66 40 60 60 62 47 66
WIND SPD          <15     <15     <15     <15     <15     15>     15>     15>     <15
AVG CLOUDS    FW SC B1 B2 OV OV B2 B2 B2 B1 SC SC SC FW FW SC SC SC
POP 12HR            5      10      50      70      40      20      10       5      10
RAIN                       C  C  L  L  C  C  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