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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Tue Jul 21 2026

NCZ018-220800-
RAWS 311941
36.22N  81.63W Elev. 3254 ft
231 PM EDT Tue Jul 21 2026

Date           07/21/26      Wed 07/22/26            Thu 07/23/26            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                 64          76          60          69          56
TEMP          79 75 73 67 66 66 69 73 73 69 66 64 62 62 65 68 67 63 61 59 57 59
DEWPT         68 67 67 66 65 65 67 68 67 66 65 64 62 62 63 64 63 61 60 59 57 58
MIN/MAX RH                  100          79         100          86         100
RH            69 76 81 97 97 97 93 84 81 90 97100100100 93 87 87 93 97100100 96
WIND DIR      SW SW  W SW  W  W  W  W  W  W NW  N  N  N  E  E  E  E  E  E  E  E
WIND SPD       9  6  5  4  4  4  5  4  4  3  1  1  1  2  4  4  4  4  3  2  2  3
WIND GUST           16 14                                                      
CLOUDS        B1 B2 B2 B2 B2 B2 B2 OV B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
CLOUDS(%)     69 87 82 72 87 84 81 96 68 61 81 74 77 73 73 82 82 75 78 73 77 78
VSBY           6  6  7  7  6  3  3  3  4  6  6  7  6  6  6  6  6  6  6  7  7   
POP 12HR                     60          80          50          70          40
RAIN SHWRS    SC IS IS SC NM NM NM  O SC SC SC SC SC NM NM NM NM SC SC SC SC SC
TSTMS         SC IS IS SC SC IS SC NM SC SC IS             SC IS               
MIX HGT        3 <1 <1 <1 <1  1  1  2  2 <1 <1 <1 <1 <1  2  2  2  1            
T WIND DIR    SW SW SW SW SW  W  W  S SW SW NW NW  N  N  E  E SE  E            
T WIND SPD    14  4  8  8 10 13  4  4  5  2  4  5  9  8  9  4  4  5            
DISPERSION       PR PR VP VP             VP VP VP VP             VP VP VP VP   
ADI           46  3  5  5  7 19  9 12 13  1  2  3  4  8 22 12 11  4            
MAX LVORI      3  4  4  7  8  5  6  5  4  7  8  9  9  8  4  5  5  6            
STABILITY      C  E  E  E  E  C  C  C  C  F  F  F  F  B  C  C  C  E            
CEILING        1100  1200     0   100   400   500   100   200   200   200      
STA PRES      26.81 26.80 26.78 26.85 26.84 26.84 26.88 26.95 26.97            


Date           07/24Sat 07/25/26Sun 07/26/26Mon 07/27/26Tue 07/28/26
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       69      59      69      60      78      63      80      63      79
TEMP          65 66 63 61 66 65 62 63 75 73 65 66 78 74 66 65 77 72
DEWPT         63 62 62 61 66 64 62 63 65 65 63 64 65 65 63 62 64 63
RH            93 87 97100100 97100100 71 76 93 93 64 74 90 90 64 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B2 OV B1 B1 SC B1 FW SC SC SC B1 SC SC B1
POP 12HR           60      80      80      40      30      10      20      30      30
RAIN SHWRS    SC NM SC  O NM  O SC IS IS SC          IS SC IS IS SC
TSTMS            SC IS IS SC NM IS    IS SC          IS IS    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