National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EST Mon Dec 15 2025

VAZ018-160900-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
431 PM EST Mon Dec 15 2025

Date           12/15/25      Tue 12/16/25            Wed 12/17/25            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                 22          45          33          52          33
TEMP             25 25 25 25 23 32 43 43 35 33 34 37 38 47 51 48 39 36 35 34 34
DEWPT             4  3  3  5  7  9 14 22 21 20 17 19 18 20 25 30 29 27 27 28 28
MIN/MAX RH                   48          31          59          34          80
RH               40 38 38 42 50 37 30 43 56 58 49 48 44 34 36 49 67 69 72 78 78
WIND DIR          W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W NW SE SE
WIND SPD          2  2  3  3  3  3  3  2  2  2  3  5  6  6  6  4  2  1  1  1  2
WIND GUST           12 16 17 13             12 14 19 23 24 21 14               
CLOUDS           CL FW FW FW FW FW FW FW FW FW FW FW SC B1 B2 B1 B1 SC SC SC FW
CLOUDS(%)         5 16 15 11  8 13 17  9 13 11 14 23 50 69 78 66 56 49 43 27 18
VSBY             10 10 10 10 10 10 10 10  9 10 10 10 10  9  9  9 10            
POP 12HR                      0           0           0          10          10
MIX HGT          <1 <1 <1 <1 <1  1  2 <1 <1 <1 <1 <1 <1  1  2  1 <1            
T WIND DIR        S SW  W  W NW  W  W SW SW  W  W  W  W  W  W  W NW            
T WIND SPD        4  4  5 11 10  9  9  6  3  4  5  5  6 13 21 10  3            
DISPERSION       VP VP VP VP             VP VP VP PR             VP VP VP VP   
ADI               2  2  3  5 11 14 21  8  2  2  3  3  5 21 37 14  2            
MAX LVORI         2  2  2  2  2  2  2  2  3  3  2  2  2  2  1  2  3            
STABILITY         G  G  G  G  B  B  B  B  G  G  G  F  C  D  D  D  F            
CEILING              None  None  None  None  None  None  9200  3800  None      
STA PRES            27.86 27.87 27.92 27.87 27.84 27.80 27.81 27.81            


Date           12/18Fri 12/19/25Sat 12/20/25Sun 12/21/25Mon 12/22/25
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       54      33      41      25      50      35      53      35      50
TEMP          53 46 48 35 38 29 26 26 49 37 37 40 52 42 39 36 49 39
DEWPT         37 41 44 28 21 14 14 14 22 25 25 32 40 36 34 31 32 31
RH            54 83 86 75 50 53 60 60 34 61 61 73 63 79 82 82 52 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 OV B2 SC FW FW SC FW FW SC SC B1 B1 B1 B1 B1 B1
POP 12HR           30      90       5       5       5      20      20      30      30
RAIN                                                           C  S
RAIN SHWRS       SC  O NM                      IS IS IS IS SC      

$$


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