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

VAZ024-202000-
RAWS 441631
37.63N  79.51W Elev. 865 ft
631 AM EDT Mon Jul 20 2026

Date             Mon 07/20/26            Tue 07/21/26            Wed 07/22/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 83          68          90          68          89
TEMP             71 78 81 83 78 73 71 71 73 83 89 87 80 74 71 69 71 81 87 88 81
DEWPT            65 66 68 70 71 70 70 70 71 74 74 74 73 72 71 69 71 72 69 67 67
MAX/MIN RH                   62          99          62         100          50
RH               81 67 65 65 79 90 97 97 93 74 61 65 79 93100100100 74 55 50 63
WIND DIR          N  E SE SE  S  N  N SW SW SW SW SW SW SW SW SW SW  W  W  W NW
WIND SPD          0  1  3  3  2  0  0  1  2  5  6  6  5  4  4  3  3  5  6  5  2
WIND GUST                                   16 18 18 20 18 17 14 14 16       12
CLOUDS           B1 SC SC B1 B1 B1 B1 B1 SC B1 B2 B1 OV OV OV OV B1 B1 SC SC FW
CLOUDS(%)        51 44 36 52 66 59 51 57 42 60 82 61 88 88 92 92 56 56 48 48 19
VSBY             10 10 10 10 10  7  4  5  7 10 10 10  4  2  8 10 10 10 10 10 10
POP 12HR                     40          70          70          90          30
RAIN SHWRS             IS SC SC SC SC SC    SC SC SC  O  O  O  O SC SC IS IS   
TSTMS                  IS SC SC IS IS       SC SC SC SC IS IS          IS IS   
Obvis                              PF PF                                       
MIX HGT           1  3  4  4 <1 <1 <1 <1 <1  4  4  3 <1 <1 <1 <1 <1  3  5  4 <1
T WIND DIR       NE  E  S  S SE  S  S  S SW  W SW SW SW SW SW SW SW SW SW  W  W
T WIND SPD        6  6  4  6 12 10  4  5  6 16 18 20 12  8  6  8 14 20 20 11 13
DISPERSION                   VP VP VP VP             PR VP VP VP             VP
ADI               9 25 26 30  6  5  2  3  8 57 70 71  8  5  5  4 20 71115 60  6
MAX LVORI         5  3  2  1  4  7  9  9  8  3  1  1  4  6  9  9  5  3  1  1  3
STABILITY         B  A  A  B  F  F  F  F  A  C  C  C  E  E  E  F  B  C  B  A  G
CEILING              None  None  2800  None  1100  2400   100  2100  None  None
STA PRES            28.49 28.43 28.40 28.37 28.38 28.35 28.32 28.32 28.33 28.35


Date          Thu 07/23/26Fri 07/24/26Sat 07/25/26Sun 07/26/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       61      83      60      83      62      83      64      89
TEMP          65 63 81 76 64 63 80 76 66 65 81 76 66 67 87 81
DEWPT         62 60 62 63 61 61 63 64 62 63 66 66 64 65 67 69
RH            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
AVG CLOUDS    FW FW SC SC FW SC B1 B1 B1 B1 B1 B1 SC SC SC SC
POP 12HR           10      10      10      20      30      20      20      20
RAIN SHWRS                         IS IS SC IS IS IS       IS
TSTMS                              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