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

NCZ003-202000-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
801 AM EDT Wed May 20 2026

Date             Wed 05/20/26            Thu 05/21/26            Fri 05/22/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 92          62          84          55          65
TEMP                86 90 90 82 71 67 64 66 79 80 75 70 64 61 58 57 61 62 64 64
DEWPT               61 59 59 62 63 62 61 63 66 67 69 67 62 59 58 57 61 62 64 63
MAX/MIN RH                   35          94          59         100          96
RH                  43 35 35 51 76 84 90 90 64 65 82 90 93 93100100100100100 97
WIND DIR             N  S  W  W NW  N  N  N  E SE  E  E  E  E  E  E  E  E  E  E
WIND SPD             0  3  4  1  1  0  0  0  1  3  3  3  3  1  1  1  3  4  4  3
CLOUDS              CL SC SC SC SC SC B1 B1 B1 B2 OV OV OV OV OV B2 B2 B2 OV OV
CLOUDS(%)            5 40 50 50 40 45 58 62 67 80 88 99 99 88 88 83 86 86 90 91
VSBY                10 10 10 10 10 10 10 10 10 10  7  3  1  3  4  2 10 10 10 10
POP 12HR                     30          30         100         100          70
RAIN SHWRS             IS SC IS IS       IS IS NM  O  O  O  O  O NM NM NM NM  O
TSTMS                  IS SC IS             IS SC SC IS                IS IS IS
MIX HGT              5  8  7 <1 <1 <1 <1 <1  3  4  1 <1  1  1  1  1  1  1  1  1
T WIND DIR           W  S  S SW SW SW  N NW SW SW  E NE NE NE NE NE NE NE NE NE
T WIND SPD           5  9 13 13  4  2  1  1  5  3 11 13 12 12 10 11 11  8  8  8
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 38 90111  6  2  1  1  1 21 17 21  6  6  6  5 19 18 14 15  4
MAX LVORI            1  1  1  2  4  5  7  6  2  2  3  5  7  7  9  5  5  5  5  9
STABILITY            A  A  A  F  G  F  F  B  B  B  B  F  F  F  F  B  B  C  C  F
CEILING              None  None  None  None  3700  3200   600   600   700   700
STA PRES            28.22 28.14 28.15 28.15 28.19 28.19 28.27 28.27 28.30 28.30


Date          Sat 05/23/26Sun 05/24/26Mon 05/25/26Tue 05/26/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       55      74      58      78      60      80      61      81
TEMP          60 59 70 70 63 62 76 74 65 64 78 75 66 65 79 76
DEWPT         59 59 67 68 62 62 70 70 63 64 71 71 64 65 71 71
RH            96100 90 93 97100 82 87 93100 79 87 93100 77 85
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 OV
POP 12HR           90      80      60      70      40      80      40      80
RAIN SHWRS     O  O  O NM NM SC SC NM SC SC SC  O SC IS NM  O
TSTMS         IS    IS SC SC       SC IS    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