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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Sat Apr 18 2026

NCZ001-190800-
RAWS 310142
36.40N  81.46W Elev. 4608 ft
802 PM EDT Sat Apr 18 2026

Date           04/18/26      Sun 04/19/26            Mon 04/20/26            Tue
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                 36          48          36          49          32
TEMP                62 57 45 38 38 45 47 44 40 39 37 39 42 47 48 44 36 33 34 38
DEWPT               54 51 38 33 26 17 15 18 21 23 25 25 25 24 19 20 21 20 21 22
MIN/MAX RH                   81          28          60          31          60
RH                  75 80 76 82 62 32 27 35 46 52 61 57 50 40 31 38 54 58 58 52
WIND DIR             W NW NW NW NW NW NW NW NW NW  W NW NW NW NW NW NW NW  W  W
WIND SPD            11 12 23 29 28 25 24 18 14 12 11 21 26 23 20 17 10  8  6  6
WIND GUST                 36 44 43 39 36 32 29 25 21                           
CLOUDS              B2 B2 B2 OV B2 B1 FW FW FW CL FW FW FW FW FW CL CL CL CL CL
CLOUDS(%)           75 84 86 94 75 54  6 17  6  3 10 22 19 16  7  5  4  5  4  5
VSBY                10 10  9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                     50           5           0           0           0
RAIN SHWRS          SC SC SC                                                   
TSTMS               SC                                                         
MIX HGT             <1 <1 <1  1  2  3  3  2 <1 <1 <1  1  4  5  4  1            
T WIND DIR           W  W NW NW NW NW NW NW NW NW  W  W  W NW NW  N            
T WIND SPD           9  9 25 39 37 41 33 17 10  8  6 12 28 27 24 17            
DISPERSION          FR FR GD             GD GD FR FR             GD FR PR PR   
ADI                  8  8 23 55 95132106 19  9  7  5 17110115 95 15            
MAX LVORI            4  4  3  3  1  1  1  2  2  2  3  2  1  1  1  2            
STABILITY            D  D  D  D  C  C  C  D  D  D  E  C  C  C  C  D            
CEILING               700   300 15800  None  None  None  None  None  None      
STA PRES            26.58 26.61 26.67 26.71 26.78 26.78 26.80 26.80            


Date           04/21Wed 04/22/26Thu 04/23/26Fri 04/24/26Sat 04/25/26
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       60      45      65      49      68      51      70      54      67
TEMP          57 54 47 51 62 60 52 52 65 61 53 54 67 64 56 56 64 61
DEWPT         29 35 33 36 35 35 41 44 42 43 42 44 44 45 44 47 48 48
RH            34 48 58 56 36 39 66 74 43 51 66 69 43 50 64 72 56 62
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW SC SC SC FW FW FW FW FW FW FW B1 SC SC B1 B2
POP 12HR            0       0      10       5      10       0      10      20      60
RAIN SHWRS                                                 IS SC NM
TSTMS                                                            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