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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon May 18 2026

VAZ018-190800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
801 PM EDT Mon May 18 2026

Date           05/18/26      Tue 05/19/26            Wed 05/20/26            Thu
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                 64          88          66          88          64
TEMP                71 67 64 67 81 88 88 82 75 71 67 71 84 87 83 75 70 67 65 67
DEWPT               56 55 55 58 59 56 55 57 54 52 52 57 61 60 62 63 63 61 61 62
MIN/MAX RH                   77          32          62          40          87
RH                  59 65 73 73 47 34 33 43 48 51 59 61 46 40 49 66 78 81 87 84
WIND DIR            SW SW  W  W  W SW  W SW SW  W  W  W  W  W  W NW  W  N  N  E
WIND SPD             8  8  4  4  3  6  6  3  5  3  3  2  5  5  5  3  2  0  0  1
WIND GUST           18 18       13       14 16 16 13 12 18 17 16 16            
CLOUDS              FW SC SC FW SC SC B1 B1 SC SC FW FW FW B2 B2 B1 B1 B2 B2 OV
CLOUDS(%)           14 36 36 25 46 49 54 66 37 46 23 13 10 74 74 66 59 81 81 95
VSBY                10 10 10 10 10 10 10 10 10 10 10 10 10 10 10  7  6  2  0  2
POP 12HR                      0           5           0          60          80
RAIN SHWRS                                                 SC NM SC SC SC NM  O
TSTMS                                                      SC SC IS            
MIX HGT             <1 <1 <1 <1  5  8  8 <1 <1 <1 <1 <1  5  8  3 <1            
T WIND DIR          SW SW SW  W  W SW SW  S SW SW  W  W  W  W NW NW            
T WIND SPD           6  5  4  4 10 11 11  2  5  6  6 16 21 14 13 11            
DISPERSION          PR PR VP             VP PR VP VP             VP VP VP VP   
ADI                  3  3  2  4 59106107  1  3  3  3 19135 73 57  5            
MAX LVORI            2  2  3  3  1  1  1  2  2  2  3  2  1  1  1  3            
STABILITY            F  F  G  A  A  A  A  F  G  F  G  A  A  C  B  F            
CEILING              None  None  None 23000  None  None  None  9500  6600      
STA PRES            28.00 27.99 28.01 27.93 27.92 27.91 27.90 27.88            


Date           05/21Fri 05/22/26Sat 05/23/26Sun 05/24/26Mon 05/25/26
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       73      55      66      57      74      62      80      64      80
TEMP          72 63 58 57 63 62 59 59 72 69 65 65 77 72 66 66 78 73
DEWPT         62 56 51 51 54 54 53 55 63 62 59 61 65 65 61 62 65 64
RH            71 78 77 80 72 75 80 87 73 78 81 87 67 79 84 87 64 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B2
POP 12HR           90      80      80      60      80      60      70      50      70
RAIN SHWRS     O  O NM  O  O NM NM SC NM  O NM SC SC NM SC IS SC NM
TSTMS         IS SC          SC          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