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

NCZ006-210800-
RAWS 310801
36.37N  79.29W Elev. 580 ft
201 PM EDT Mon Apr 20 2026

Date           04/20/26      Tue 04/21/26            Wed 04/22/26            Thu
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                 30          71          47          85          52
TEMP          66 55 46 40 35 37 53 65 70 62 55 53 51 52 73 82 84 74 63 57 54 57
DEWPT         30 23 21 21 21 22 24 25 28 31 32 32 34 38 44 43 42 43 44 45 44 46
MIN/MAX RH                   67          20          60          23          71
RH            26 29 37 46 56 54 32 22 21 31 41 44 52 59 35 25 23 33 50 64 69 67
WIND DIR      NW  N  N NE NE NE  E SW SW  S  S SW SW SW SW  W  W NW  W  W  W  W
WIND SPD      12  6  3  2  1  2  2  3  5  4  4  4  5  5  9 11  9  4  2  1  2  2
CLOUDS        FW FW CL FW CL FW FW FW FW SC SC SC SC FW FW FW FW SC SC FW FW FW
CLOUDS(%)     18  6  4  7  5  6  6  8 15 31 50 46 37 25 23 16 20 33 33 17 11  8
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0           0           0          10           5
MIX HGT        8 <1 <1 <1 <1 <1  4  5  5 <1 <1 <1 <1 <1  3  9 11 <1            
T WIND DIR    NW  N  N NE NE  E  S SW SW  S  S  S SW SW  W  W  W  W            
T WIND SPD    19  8  8  4  3  5  1  6 12  6  5  8  8  9 28 26 23 14            
DISPERSION       PR VP VP VP             VP VP VP PR             VP VP VP VP   
ADI           96  4  4  2  2  6  5 41 74  3  4  5  4  9111139200  7            
MAX LVORI      1  2  2  2  3  3  2  1  1  2  2  2  2  2  1  1  1  2            
STABILITY      C  F  G  G  G  A  A  A  A  F  E  E  F  A  B  C  B  F            
CEILING        None  None  None  None  None  None  None  None  None  None      
STA PRES      29.56 29.64 29.71 29.74 29.59 29.53 29.48 29.43 29.38            


Date           04/23Fri 04/24/26Sat 04/25/26Sun 04/26/26Mon 04/27/26
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       87      55      87      60      85      57      80      54      75
TEMP          84 76 63 60 85 79 64 63 84 74 64 58 78 74 60 57 72 71
DEWPT         47 48 47 50 48 47 48 51 53 56 56 56 54 52 54 53 56 56
RH            28 37 56 69 28 32 56 65 34 53 75 93 43 46 81 86 57 59
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC FW FW SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B2
POP 12HR            5       5       5       5      40      50      50      40      40
RAIN SHWRS                               SC SC SC SC 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