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 EDT Wed Apr 15 2026

NCZ001-160800-
RAWS 310142
36.40N  81.46W Elev. 4608 ft
431 PM EDT Wed Apr 15 2026

Date           04/15/26      Thu 04/16/26            Fri 04/17/26            Sat
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08

MIN/MAX TEMP                 56          72          55          71          54
TEMP          74 69 64 61 59 59 65 69 71 65 62 59 57 56 62 68 70 65 58 56 55 58
DEWPT         44 39 44 44 43 44 44 44 44 41 48 51 53 53 49 46 45 47 47 46 46 47
MIN/MAX RH                   62          37          91          41          73
RH            34 33 48 53 55 57 46 40 38 41 60 75 86 90 62 45 41 52 67 69 72 67
WIND DIR      SW SW  W  W  W  W  W  W  W  W  W  W  W NW NW  W  W  W  W  W SW  S
WIND SPD       8  8  8 10 11 11 13 11 11 10 12 17 16 14 13 10 10  9  8  6  5  6
WIND GUST                       26 21 21                                       
CLOUDS        FW FW SC SC B1 SC FW FW FW B1 B1 B1 B1 SC FW SC FW FW FW SC SC SC
CLOUDS(%)     11 23 27 32 59 31 25 13  8 53 58 58 58 42 24 30 20 10 23 33 34 39
VSBY          10 10 10 10 10 10 10 10 10  7  7  7  7 10 10 10 10 10            
POP 12HR                      0          20          40          10           0
RAIN SHWRS                               IS SC SC SC                           
MIX HGT        6 <1 <1 <1 <1 <1  3  5  5 <1 <1 <1 <1 <1  3  6  6 <1            
T WIND DIR    SW  S SW  W  W  W  W  W  W  W  W NW NW NW NW NW NW NW            
T WIND SPD     9  9  3  4  6 14 19 19 16 10 27 21 14 12 19 16 12  6            
DISPERSION       PR PR FR FR             FR FR GD GD             PR PR PR PR   
ADI           61  6  2  3  6 11 57 82 68  9 25 20 13 10 62101 79  5            
MAX LVORI      1  2  2  2  3  2  1  1  1  2  2  3  4  5  1  1  1  2            
STABILITY      B  E  E  E  D  C  C  C  C  D  D  D  D  C  C  B  B  E            
CEILING              None  None  None  None  1100  None  None  None  None      
STA PRES            26.76 26.73 26.75 26.67 26.68 26.68 26.73 26.70            


Date           04/18Sun 04/19/26Mon 04/20/26Tue 04/21/26Wed 04/22/26
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MAX/MIN TEMP       75      44      53      33      51      35      62      44      63
TEMP          74 69 59 48 52 48 37 35 49 45 37 39 59 54 47 49 61 58
DEWPT         49 52 50 44 31 26 22 21 19 21 21 24 29 32 32 36 38 38
RH            41 55 72 86 44 42 54 56 30 38 52 54 32 43 56 61 42 47
WIND SPD          <15     <15     15>     15>     <15     <15     <15     <15     <15
AVG CLOUDS    SC B1 B1 B2 B2 B1 FW FW CL FW CL CL FW FW FW FW FW FW
POP 12HR           20      60      40      10       5       0       0       5      10
RAIN SHWRS       IS SC NM SC IS                                    
TSTMS            IS IS                                             

$$


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