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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed May 20 2026

VAZ024-202000-
RAWS 441631
37.63N  79.51W Elev. 865 ft
801 AM EDT Wed May 20 2026

Date             Wed 05/20/26            Thu 05/21/26            Fri 05/22/26
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                 95          64          77          53          63
TEMP                88 95 92 82 74 70 67 66 73 74 71 65 61 59 57 55 59 61 62 61
DEWPT               64 62 63 65 65 65 64 64 66 65 63 59 57 56 56 55 58 58 59 57
MAX/MIN RH                   34          95          69         100          89
RH                  45 34 38 56 74 84 90 93 79 74 76 81 87 90 96100 96 90 90 87
WIND DIR             W SW  S  N NE  N NE NE NE NE NE NE NE NE NE NE  E  E  E  E
WIND SPD             2  4  4  2  1  0  1  1  3  4  5  4  2  1  2  2  3  3  3  3
WIND GUST                                            16                        
CLOUDS              CL FW SC B1 B2 B1 B2 B2 OV OV B2 OV OV OV OV OV OV B2 B2 B2
CLOUDS(%)            2  9 43 60 75 65 71 84 88 89 86 94 89 97 97 92 92 86 86 86
VSBY                10 10 10 10 10  8  4  5  6  6  5  1  1  2  2  1 10 10 10 10
POP 12HR                     30          70          90         100          90
RAIN SHWRS                IS SC NM SC    SC NM NM  O  O  O  O  O  O  O SC SC  O
TSTMS                     IS SC IS          IS SC SC                   IS IS   
MIX HGT              5  8  5 <1 <1 <1 <1  1  1  2  1  1  1  1  1  1  1  1  1  1
T WIND DIR           W SW SW  W  N NE NE NE NE NE NE NE NE NE NE NE  E NE NE NE
T WIND SPD          11 11 12  6  4  8  6 12 13 17 13  8  9  9  8 11 10 10 10  8
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 71110 82  3  2  4  3 19 27 37 25  5  4  4  4 19 19 19 19  4
MAX LVORI            1  1  1  3  3  5  6  5  3  3  3  4  5  6  8  5  5  4  4  6
STABILITY            A  A  A  F  F  F  F  B  B  C  C  E  F  F  F  B  B  B  B  F
CEILING              None  None  5400   300   300  1500  1400   700   900   500
STA PRES            28.58 28.49 28.53 28.56 28.64 28.68 28.71 28.71 28.75 28.73


Date          Sat 05/23/26Sun 05/24/26Mon 05/25/26Tue 05/26/26
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       53      72      58      79      62      83      63      84
TEMP          57 55 68 68 63 61 77 73 67 64 81 77 68 66 82 78
DEWPT         56 55 63 64 61 61 68 68 64 64 69 70 65 64 69 69
RH            96100 84 87 93100 74 84 90100 67 79 90 93 65 74
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2
POP 12HR           80      80      60      60      60      70      40      80
RAIN SHWRS     O  O  O NM NM SC IS NM NM IS IS NM SC IS NM  O
TSTMS                  SC IS       SC IS       SC IS       SC

$$


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