National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Thu Apr 16 2026

VAZ024-170800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
301 PM EDT Thu Apr 16 2026

Date           04/16/26      Fri 04/17/26            Sat 04/18/26            Sun
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                 62          86          57          90          56
TEMP          89 80 73 68 64 64 76 84 86 78 68 62 58 60 78 87 89 80 73 68 62 56
DEWPT         46 48 51 56 56 57 55 49 47 47 49 49 50 52 55 54 53 54 56 55 55 48
MIN/MAX RH                   82          26          79          29          79
RH            23 33 46 65 75 78 48 30 26 33 51 62 75 75 45 32 29 41 55 63 78 74
WIND DIR      SW  W  W  W  W  W NW NW NW NW NW  N  N  N  S  S  S  S SW  W  W NW
WIND SPD      11  3  3  2  2  2  4  5  5  2  1  1  1  0  2  5  5  3  2  2  4  6
WIND GUST                                                                 14 19
CLOUDS        FW FW B1 B1 B1 SC FW FW FW FW FW SC FW SC SC SC SC B1 B2 B2 B2 B2
CLOUDS(%)     10 18 56 68 53 31 14  8  6 14  9 31 25 29 26 39 50 69 70 74 70 83
VSBY          10 10  9  9  9  9  9 10 10 10 10 10 10 10 10  7  7  6  6  6  6   
POP 12HR                     30          10           0          10          50
RAIN SHWRS          SC IS SC                                     SC SC SC SC SC
TSTMS                                                               IS         
MIX HGT        8 <1  1 <1 <1 <1  5  8  8 <1 <1 <1 <1 <1  4  7  8 <1            
T WIND DIR    SW SW  W  W  W  W NW NW NW  W NW  N  N  N SW SW SW  S            
T WIND SPD    19  9 19 11  4  5 17 14 13  2  3  3  3  1 12 13 17 10            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           99  4  9  5  2  7111135130  1  2  2  2  1 64116163  5            
MAX LVORI      1  2  2  3  4  4  1  1  1  2  2  3  3  4  1  1  1  2            
STABILITY      C  G  F  F  F  A  A  A  A  G  G  G  G  A  A  A  A  F            
CEILING              None  None  None  None  None  None  None  None  5700      
STA PRES            28.43 28.46 28.49 28.46 28.48 28.47 28.45 28.35            


Date           04/19Mon 04/20/26Tue 04/21/26Wed 04/22/26Thu 04/23/26
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       66      38      62      34      74      50      81      52      81
TEMP          61 57 46 41 59 55 39 38 68 67 54 54 79 72 57 55 78 72
DEWPT         36 26 25 22 17 16 20 20 29 33 36 41 43 43 44 46 47 42
RH            39 30 43 46 19 21 46 48 23 28 50 61 28 35 62 72 33 34
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B1 FW CL CL CL CL CL CL FW FW FW SC SC FW FW SC SC
POP 12HR           50      10       0       0       0       0      10       5      20
RAIN SHWRS    SC SC                                           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