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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 PM EDT Tue May 19 2026

VAZ018-200800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
331 PM EDT Tue May 19 2026

Date           05/19/26      Wed 05/20/26            Thu 05/21/26            Fri
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                 68          91          66          70          54
TEMP          90 80 74 71 68 72 85 90 87 76 71 68 66 66 69 70 66 60 57 56 55 55
DEWPT         57 59 57 54 54 59 62 59 60 62 63 61 61 63 65 65 63 58 55 53 52 53
MIN/MAX RH                   65          36          91          82          96
RH            33 49 55 55 61 64 46 35 40 62 76 78 84 90 87 84 90 93 93 90 90 93
WIND DIR       W  W  W  W  W  W  W  W  W  W NW  N  N NE  E  E  E  E  E  E  E  E
WIND SPD       3  1  2  3  3  2  4  4  4  3  1  0  0  1  2  4  3  4  4  3  3  3
WIND GUST              13       16 14 14 14                      18 16 13 14 16
CLOUDS        SC B1 B2 B1 SC FW FW SC B1 B1 B2 B2 B2 OV OV OV OV OV OV B2 B2 B2
CLOUDS(%)     36 61 73 56 45  9 12 30 63 55 73 70 78 94 94 98 98 92 92 85 86 86
VSBY          10 10 10 10 10 10 10 10 10  9  7  4  3  3  4  3  2  2            
POP 12HR                     10          40          60         100          90
RAIN SHWRS                            SC IS NM NM NM  O  O  O  O  O  O NM NM  O
TSTMS                                 SC IS             IS SC IS               
MIX HGT        8 <1 <1 <1 <1 <1  5  7  5 <1 <1 <1 <1 <1  2  2  2  1            
T WIND DIR    SW SW SW  W  W  W  W  W  W  W NE  E SE  E  E  E NE  E            
T WIND SPD    10  5  4  5  5  9 16  9  4  2  3  8  6 10 13 10 11  9            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           92  3  2  3  3  9 96 81 19  1  2  4  3 13 37 23 24  6            
MAX LVORI      1  2  2  3  3  3  1  1  2  3  4  4  5  4  4  4  5  6            
STABILITY      A  F  F  F  F  A  A  A  C  F  F  F  F  B  B  C  B  E            
CEILING             10600  None  None  4100  1300     0   100   100   100      
STA PRES            27.91 27.90 27.90 27.84 27.86 27.88 27.93 27.93            


Date           05/22Sat 05/23/26Sun 05/24/26Mon 05/25/26Tue 05/26/26
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       60      56      72      62      78      63      79      64      80
TEMP          60 60 59 59 70 68 64 65 77 72 65 66 78 72 67 67 79 74
DEWPT         57 55 54 55 63 61 58 60 66 64 60 61 66 65 61 62 66 64
RH            90 84 83 87 78 78 81 84 69 76 84 84 67 79 81 84 64 71
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2
POP 12HR           80      70      70      40      70      50      80      40      70
RAIN SHWRS     O SC NM SC NM NM SC IS SC NM SC SC SC  O SC IS SC NM
TSTMS            SC          SC          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