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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon Jul 20 2026

VAZ046-210800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
231 AM EDT Mon Jul 20 2026

Date           07/19/26      Mon 07/20/26            Tue 07/21/26            Wed
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                 68          84          69          89          70
TEMP                      69 70 77 83 83 78 73 72 70 72 82 87 85 80 76 73 71 73
DEWPT                     69 67 70 72 72 73 72 71 70 72 76 77 77 75 74 73 71 73
MIN/MAX RH                   98          68         100          71         100
RH                       100 90 79 70 70 85 97 97100100 82 72 77 85 94100100100
WIND DIR                  NE NE NE  E SE SE SE SW SW SW SW SW SW SW SW SW SW SW
WIND SPD                   2  4  4  4  4  3  3  3  4  8 10 13 13 12 11 10 10 10
WIND GUST                                                  24 24 24 23 21 21   
CLOUDS                    B2 B1 B1 B1 B1 SC B2 B1 B2 B1 B1 B2 B2 B2 B2 OV OV B2
CLOUDS(%)                 74 61 66 60 59 48 80 67 74 64 65 80 74 84 84 93 93 75
VSBY                       7 10 10 10 10 10  9  7  7  9 10 10 10 10  6  3  3 10
POP 12HR                     40          50          70          70          90
RAIN SHWRS                      IS IS SC IS SC SC SC       NM SC  O  O  O  O NM
TSTMS                              IS SC IS SC IS          SC SC SC SC SC IS   
Obvis                     PF                   PF                              
MIX HGT                   <1  1  2  4  4 <1 <1 <1 <1  1  3  3  2  1 <1 <1 <1  1
T WIND DIR                NE NE  E SE SE SE SE  S  S SW  W SW SW SW SW  S  W SW
T WIND SPD                 5 12  8  2  5 12 11  9  9 12 18 23 20 17  6  6 19 14
DISPERSION                VP             VP VP VP VP             FR FR FR FR   
ADI                        3 18 22  8 20  6  5  4  6 19 58 58 57 15  6  6 18 28
MAX LVORI                  6  5  3  3  3  5  9  9  8  5  4  3  3  4  6  8  5  4
STABILITY                  F  C  C  C  C  F  F  F  E  C  C  D  C  D  D  D  D  C
CEILING                    1200  2800  2600  4100  3200  1200 10900  4500  1700
STA PRES                  29.23 29.26 29.21 29.19 29.15 29.16 29.13 29.10 29.12


Date           07/22Thu 07/23/26Fri 07/24/26Sat 07/25/26Sun 07/26/26
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       87      64      81      62      82      64      81      65      86
TEMP          86 79 68 66 79 73 64 65 80 75 66 66 79 75 66 68 85 80
DEWPT         73 71 65 61 63 64 62 62 64 64 63 64 67 67 64 66 69 70
RH            65 77 90 84 58 73 93 90 58 69 90 93 67 76 93 93 59 72
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B1 B1 SC SC SC FW SC B1 B1 B1 B2 B1 B1 B1 SC SC SC
POP 12HR           60      30      10      20      10      20      20      10      20
RAIN SHWRS    NM SC SC IS       IS IS       IS IS IS IS          IS
TSTMS            SC IS                      IS       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