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

VAZ024-210800-
RAWS 441631
37.63N  79.51W Elev. 865 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                 69          83          68          90          68
TEMP                      70 71 78 81 83 78 73 71 71 73 83 89 87 80 74 71 69 71
DEWPT                     66 65 66 68 70 71 70 70 70 71 74 74 74 73 72 71 69 71
MIN/MAX RH                   86          62          99          62         100
RH                        87 81 67 65 65 79 90 97 97 93 74 61 65 79 93100100100
WIND DIR                   N  N  E SE SE  S  N  N SW SW SW SW SW SW SW SW SW SW
WIND SPD                   0  0  1  3  3  2  0  0  1  2  5  6  6  5  4  4  3  3
WIND GUST                                               16 18 18 20 18 17 14 14
CLOUDS                    B1 B1 SC SC B1 B1 B1 B1 B1 SC B1 B2 B1 OV OV OV OV B1
CLOUDS(%)                 60 51 44 36 52 66 59 51 57 42 60 82 61 88 88 92 92 56
VSBY                       7  9 10 10 10 10 10  5  4  5 10 10 10  4  2  8 10 10
POP 12HR                     10          40          70          70          90
RAIN SHWRS                         IS SC SC SC SC SC    SC SC SC  O  O  O  O SC
TSTMS                              IS SC SC IS IS       SC SC SC SC IS IS      
Obvis                                          PF PF                           
MIX HGT                   <1  1  3  4  4 <1 <1 <1 <1 <1  4  4  3 <1 <1 <1 <1 <1
T WIND DIR                NE NE  E  S  S SE  S  S  S SW  W SW SW SW SW SW SW SW
T WIND SPD                 4  6  6  4  6 12 10  4  5  6 16 18 20 12  8  6  8 14
DISPERSION                VP             VP VP VP VP             PR VP VP VP   
ADI                        2  9 25 26 30  6  5  2  3  8 57 70 71  8  5  5  4 20
MAX LVORI                  6  5  3  2  1  4  7  9  9  8  3  1  1  4  6  9  9  5
STABILITY                  F  B  A  A  B  F  F  F  F  A  C  C  C  E  E  E  F  B
CEILING                    None  None  None  2800  None  1100  2400   100  2100
STA PRES                  28.46 28.49 28.43 28.40 28.37 28.38 28.35 28.32 28.32


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       89      61      83      60      83      62      83      64      89
TEMP          87 81 65 63 81 76 64 63 80 76 66 65 81 76 66 67 87 81
DEWPT         69 67 62 60 62 63 61 61 63 64 62 63 66 66 64 65 67 69
RH            55 63 90 90 53 64 90 93 56 66 87 93 60 71 93 93 52 67
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 SC FW FW SC SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC
POP 12HR           30      10      10      10      20      30      20      20      20
RAIN SHWRS    SC IS                      IS IS SC IS IS IS       IS
TSTMS            IS                      IS 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