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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Mon Apr 20 2026

NCZ005-202000-
RAWS 310540
36.38N  79.70W Elev. 858 ft
131 PM EDT Mon Apr 20 2026

Date             Mon 04/20/26            Tue 04/21/26            Wed 04/22/26
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                 66          36          69          50          81
TEMP                   64 65 56 46 42 37 39 55 65 69 64 57 54 51 54 70 79 81 74
DEWPT                  32 26 21 20 21 22 23 26 27 29 33 33 35 35 39 44 42 41 43
MAX/MIN RH                   21          57          22          58          24
RH                     30 23 25 35 43 54 52 32 24 22 31 40 48 54 57 39 27 24 33
WIND DIR               NW NW  N  N NE NE NE SE SW SW  S  S SW SW SW SW  W  W  W
WIND SPD               12 11  5  5  3  2  2  2  4  6  5  6  6  6  8  9 11 10  5
CLOUDS                 SC FW FW FW FW FW FW FW FW FW SC B1 SC FW SC FW FW SC SC
CLOUDS(%)              28  8 10  8  8  6  6  6  9 18 44 55 47 21 35 25 22 29 36
VSBY                   10 10 10 10 10 10 10 10 10 10 10 10 10 10               
POP 12HR                      0           0           0           0          10
MIX HGT                 9  8 <1 <1 <1 <1 <1  4  5  5 <1                        
T WIND DIR              W NW  N  N  N  N NE  W SW SW  S                        
T WIND SPD             21 18 13  5  3  3  3  1  5  6  6                        
DISPERSION                   PR PR VP VP             PR PR PR PR             PR
ADI                   113 93  6  3  2  2  4  5 34 46  3                        
MAX LVORI               1  1  2  2  2  3  2  2  1  1  2                        
STABILITY               C  C  F  F  G  G  A  A  A  A  F                        
CEILING                    None  None  None  None  None  None                  
STA PRES                  29.44 29.56 29.61 29.63 29.49                        


Date          Thu 04/23/26Fri 04/24/26Sat 04/25/26Sun 04/26/26
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       54      83      57      86      60      85      58      74
TEMP          58 58 80 76 64 60 84 78 65 63 83 76 64 60 73 70
DEWPT         47 48 49 48 48 50 46 47 49 52 52 54 55 54 53 51
RH            67 69 34 37 56 69 27 33 56 67 34 46 73 81 49 51
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC FW FW FW FW SC FW SC SC SC SC B1 B1 B1 B1 B1
POP 12HR            5       5       0       5      10      40      40      40
RAIN SHWRS                                  IS SC 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