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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun May 17 2026

VAZ018-180800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
401 PM EDT Sun May 17 2026

Date           05/17/26      Mon 05/18/26            Tue 05/19/26            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                 63          89          65          92          66
TEMP          84 77 70 67 64 69 82 87 88 81 74 70 66 70 82 90 90 81 74 70 67 72
DEWPT         61 62 59 56 56 60 63 59 57 57 55 54 54 58 59 54 54 55 54 53 54 58
MIN/MAX RH                   75          35          68          29          64
RH            46 60 68 68 75 73 53 39 35 44 51 57 65 66 46 30 30 41 50 55 63 61
WIND DIR       S  S SW  W  W  W SW  S  S  S SW SW  W  W SW SW SW SW SW  W  W  W
WIND SPD       3  2  1  2  2  1  2  5  6  4  4  3  2  1  3  4  6  3  3  3  3  3
WIND GUST                          16 20 18 17 16 12       14 18 14 16 14 13 13
CLOUDS        SC FW FW CL FW FW CL FW FW FW SC FW FW SC FW FW FW FW FW FW FW SC
CLOUDS(%)     31 16  7  3 11 25  2  6 11 14 27 25 16 26 12 23 21 24 22 18 18 26
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10  9  9 10
POP 12HR                      5           0           0           5           0
MIX HGT        5 <1 <1 <1 <1 <1  4  7  7 <1 <1 <1 <1 <1  5  8  9 <1            
T WIND DIR     S  S SW  W  W  W  W SW  S  S SW  W  W  W  W  W  W SW            
T WIND SPD     5  6  4  2  3  3  8 10 12 14  8  5  4  4 13 11 11  3            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           34  3  2  1  2  3 41 90 95  7  4  3  2  4 83109103  2            
MAX LVORI      1  3  3  3  3  4  1  1  1  2  2  3  3  3  1  1  1  2            
STABILITY      A  G  G  G  G  A  A  A  B  F  F  G  G  A  A  A  B  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            27.93 27.99 28.03 27.97 28.00 28.00 28.01 27.94            


Date           05/20Thu 05/21/26Fri 05/22/26Sat 05/23/26Sun 05/24/26
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       86      64      73      56      68      58      76      62      81
TEMP          84 77 68 66 71 66 59 58 65 64 61 61 73 69 65 65 77 73
DEWPT         62 64 61 60 60 55 50 50 55 55 54 55 63 62 59 60 65 64
RH            48 64 78 81 68 68 72 75 70 73 78 81 71 78 81 84 67 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2
POP 12HR           80      70      80      70      70      60      80      50      80
RAIN SHWRS        O NM NM  O  O NM SC NM NM NM SC NM  O SC SC SC  O
TSTMS            SC SC IS IS SC          SC          SC          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