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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Sat Apr 18 2026

VAZ024-190800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
802 PM EDT Sat Apr 18 2026

Date           04/18/26      Sun 04/19/26            Mon 04/20/26            Tue
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                 51          64          39          61          31
TEMP                74 69 64 53 54 61 62 54 48 44 40 44 53 58 60 53 43 36 32 35
DEWPT               54 57 46 39 34 28 23 22 23 26 27 27 24 20 17 17 19 21 21 21
MIN/MAX RH                   66          22          61          19          63
RH                  50 66 52 59 46 28 22 28 37 49 59 51 32 23 18 24 38 54 63 56
WIND DIR             W  W NW NW NW NW NW NW SW SW  W NW NW NW NW NW  N  N  N  N
WIND SPD             3  3  9 11 11 14 12  4  3  4  4  3  6 10  9  4  2  1  1  1
WIND GUST                 20 26 25 26 24 14             19 21 20 14            
CLOUDS              B2 B2 B2 OV B2 SC CL CL FW FW SC SC FW FW FW CL CL CL CL CL
CLOUDS(%)           76 75 82 93 73 39  4  5  7 13 35 27 13 12  6  2  3  4  4  3
VSBY                10 10 10  9 10 10 10 10 10 10 10 10 10  8  9  8  8  8  9   
POP 12HR                     50          30           5           5           0
RAIN SHWRS          SC SC SC SC                                                
TSTMS               IS                                                         
MIX HGT             <1 <1  2  3  4  7  7  1 <1 <1 <1  2  6  9  9  1            
T WIND DIR          SW  W NW NW NW NW NW NW  W SW  W NW NW NW NW NW            
T WIND SPD           9  8 29 26 28 25 25 12  3  3  3 11 12 18 18 11            
DISPERSION          VP VP PR             VP VP VP VP             VP VP VP VP   
ADI                  4  4 40 60111117118  6  2  2  2 34 87161160  5            
MAX LVORI            2  3  1  1  1  1  1  2  2  2  3  1  1  1  1  2            
STABILITY            F  F  D  D  C  C  C  F  G  F  F  A  B  B  B  F            
CEILING              5500  2500  7900  None  None  None  None  None  None      
STA PRES            28.31 28.35 28.47 28.52 28.61 28.62 28.68 28.67            


Date           04/21Wed 04/22/26Thu 04/23/26Fri 04/24/26Sat 04/25/26
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       70      45      79      51      84      53      87      57      83
TEMP          65 63 50 49 77 72 56 54 81 75 59 57 85 78 63 59 81 73
DEWPT         25 32 34 39 43 43 46 47 48 47 47 48 47 48 49 51 53 52
RH            22 31 54 68 30 35 69 77 32 37 64 72 27 35 60 75 38 48
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    CL FW FW SC B1 B1 FW CL FW FW FW FW FW SC SC SC B1 B1
POP 12HR            0       5      20       5       5       0      10      20      50
RAIN SHWRS                IS IS                            IS SC SC
TSTMS                                                            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