National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Apr 15 2026

VAZ046-160800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
801 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                 64          90          65          86          59
TEMP                75 71 68 68 79 85 89 83 76 72 67 66 78 84 86 78 70 64 59 62
DEWPT               51 51 50 52 52 51 50 49 51 52 55 57 57 54 51 51 50 51 51 52
MIN/MAX RH                   63          27          73          30          76
RH                  43 49 52 57 39 31 26 31 42 49 65 73 48 36 30 39 49 63 75 70
WIND DIR            SW SW SW SW SW SW SW SW SW  W  W  W  W  W  W  W NW  N  N  N
WIND SPD             8  5  5  5  8 10 10  6  6  5  5  5  6  6  5  3  2  2  2  2
CLOUDS              B1 B1 B1 SC SC FW FW FW FW SC B1 SC SC FW FW FW FW FW SC FW
CLOUDS(%)           53 56 54 45 38 17 10 13 24 47 65 43 33 22 22 12 21 19 27 24
VSBY                10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           5          10          20           5
RAIN SHWRS                                           IS IS                     
MIX HGT             <1 <1 <1 <1  4  7  8 <1 <1 <1 <1 <1  3  8  9 <1            
T WIND DIR          SW SW SW SW SW SW SW SW SW  W  W  W NW NW NW  W            
T WIND SPD           6  6  4  5 12 18 18  6  6  6 10 12 18 14 13  3            
DISPERSION          PR PR PR             PR PR PR PR             VP VP VP VP   
ADI                  5  3  3  6 58138152  3  3  5  7 12 78118138  2            
MAX LVORI            2  2  2  3  1  1  1  2  2  2  3  3  1  1  1  2            
STABILITY            E  F  E  A  B  B  B  F  F  E  E  A  B  B  A  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.28 29.27 29.28 29.18 29.18 29.21 29.25 29.21            


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       90      56      71      40      64      36      72      50      81
TEMP          87 83 70 62 68 65 45 43 61 57 42 41 68 65 57 54 78 73
DEWPT         54 53 55 50 41 32 29 26 20 21 23 24 30 33 35 39 43 42
RH            32 36 59 65 37 29 53 51 20 24 46 50 24 30 43 57 29 33
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC B1 B2 B2 B1 SC FW FW FW CL CL FW FW FW FW SC SC
POP 12HR            5      40      40      20       5       0       0       5      10
RAIN SHWRS          SC SC SC SC 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