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

VAZ018-202000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
131 PM 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                 92          63          67          54          59
TEMP                   89 88 77 69 66 63 64 67 67 63 58 55 55 54 56 58 59 59 57
DEWPT                  58 60 62 62 61 61 62 66 67 65 59 57 55 54 55 58 58 59 56
MAX/MIN RH                   35          99          90         100          93
RH                     35 39 60 78 84 93 93 97100107104108100100 96100 96100 96
WIND DIR                W  W  W NW  N  N  E SE  E  E  E  E  E  E  E  E  E  E  E
WIND SPD                5  4  4  4  4  3  3  3  5  6  4  3  3  3  4  4  5  5  4
WIND GUST                                            18 16 13 14 16 17 16 16 19
CLOUDS                 SC B1 B1 B1 B1 B2 OV OV OV OV OV OV OV OV OV OV B2 B2 B2
CLOUDS(%)              26 56 64 67 69 74 90 93 92 94 96 94 93 92 92 92 87 86 87
VSBY                   10 10 10 10  7  4  4  4  4  3  3  2  2  5  3  2  2  2  2
POP 12HR                     40          70          90          90          80
RAIN SHWRS                SC SC SC SC SC SC NM  O NM  O NM  O  O  O  O  O  O  O
TSTMS                     SC SC IS          IS SC SC                   IS IS   
Obvis                                    PF                                    
MIX HGT                 7  6 <1 <1 <1 <1 <1  1  2  1  1  1  1  1  1  1  2  1  1
T WIND DIR             SW SW SW NW  N NE  E SE NE NE NE NE NE NE  E  E  E  E  E
T WIND SPD              9  8  3  2  1  1  8 10 14 11 10  8  6  8  8  9 10  9 10
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                    81 35  2  2  1  1 10 19 32 15  7  4  3  4 11 16 22 17  7
MAX LVORI               1  1  3  4  6  7  5  5  4  5  8  9  9  9  6  5  5  5  6
STABILITY               A  C  E  E  E  F  B  B  C  C  E  F  F  F  C  C  C  C  E
CEILING                    None  4900  1300   500   300   100   100   100   100
STA PRES                  27.81 27.83 27.83 27.83 27.85 27.90 27.90 27.95 27.94


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       54      64      61      80      64      81      65      82
TEMP          55 55 63 62 63 64 77 73 66 67 80 72 67 68 79 74
DEWPT         53 54 62 62 59 61 67 65 61 63 68 66 61 62 67 66
RH            93 96 97100 87 90 71 76 84 87 67 81 81 81 67 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B2
POP 12HR           70      80      60      70      40      90      60      80
RAIN SHWRS     O NM  O NM NM SC SC NM SC SC NM  O NM SC 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