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

VAZ024-210800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
531 PM EDT Wed May 20 2026

Date           05/20/26      Thu 05/21/26            Fri 05/22/26            Sat
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                 66          72          55          60          54
TEMP             82 75 70 67 68 71 69 64 60 58 57 57 55 58 59 60 59 57 55 54 54
DEWPT            62 62 63 63 63 65 64 61 60 58 57 56 55 58 59 59 57 56 55 53 54
MIN/MAX RH                   88          81         100          93         100
RH               51 64 78 87 84 81 84 90100100100 96100100100 96 93 96100 96100
WIND DIR          W  N  N NE NE NE NE NE  E NE NE NE NE  E  E  E  E  E  E  E  E
WIND SPD          2  2  3  2  3  3  5  6  4  3  2  2  2  3  4  4  3  2  1  1  1
WIND GUST                                16                      13            
CLOUDS           SC B2 B1 B1 B2 OV OV OV OV OV OV OV OV OV B2 B2 OV OV OV OV OV
CLOUDS(%)        49 70 61 68 77 88 94 95 95 96 94 94 95 95 87 86 91 91 92 92 92
VSBY             10 10 10  6  5  5  3  3  3  3  3  3  3  3  2  1  2            
POP 12HR                     60          80          80          80          80
RAIN SHWRS       IS SC SC IS IS SC  O NM  O NM  O  O  O  O  O  O  O  O  O  O  O
TSTMS            IS                IS IS                   IS IS               
MIX HGT          <1 <1 <1 <1  1  2  2  1  1  1  1  1  1  2  1  2  1            
T WIND DIR        S  W NE  E  E  E NE  N NE NE  N NE NE NE NE  E NE            
T WIND SPD       12  1  3  8  9 11 14  9 10 10  8  8 11 12 10 11 10            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               6  1  2  4 13 27 34 17  7  5  4  4 17 25 19 26  5            
MAX LVORI         2  4  5  6  4  4  4  5  8  9  9  9  5  5  5  4  6            
STABILITY         F  F  E  F  C  C  C  C  E  F  F  F  B  B  C  C  F            
CEILING              6100  3100   300   600   400  1100  1100  1100   500      
STA PRES            28.53 28.55 28.58 28.60 28.62 28.63 28.69 28.69            


Date           05/23Sun 05/24/26Mon 05/25/26Tue 05/26/26Wed 05/27/26
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       68      54      79      62      82      63      82      63      82
TEMP          63 68 61 58 76 75 68 65 81 76 69 65 80 76 69 65 80 75
DEWPT         62 64 61 58 68 68 65 64 69 69 65 64 68 69 65 63 67 68
RH            97 87100100 76 79 90 97 67 79 87 97 67 79 87 93 65 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B1 B2 B2 B2
POP 12HR           80      70      60      40      70      40      60      40      60
RAIN SHWRS     O SC NM SC IS NM SC IS SC NM SC SC NM NM SC IS SC NM
TSTMS            SC IS       SC IS       SC IS       SC 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