National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

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

NCZ006-202000-
RAWS 310801
36.37N  79.29W Elev. 580 ft
801 AM EDT Tue Oct 20 2026

Date             Tue 10/20/26            Wed 10/21/26            Thu 10/22/26
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                 72          46          68          40          72
TEMP                61 69 70 58 53 49 47 46 57 66 66 55 48 45 43 41 58 68 71 60
DEWPT               37 38 38 40 41 43 42 41 44 42 42 49 47 45 43 41 49 44 46 48
MAX/MIN RH                   29          86          39         100          39
RH                  41 32 31 51 64 80 83 83 62 42 42 80 96100100100 72 42 41 64
WIND DIR             N  N  N NE  N  N  N  N  N  N  N NE  N  N  N  N  N  N  N  N
WIND SPD             6  8  5  2  2  2  3  4  6  6  5  1  0  0  0  0  2  4  3  0
CLOUDS              CL CL CL CL CL CL CL CL CL FW CL CL CL CL CL FW CL CL CL CL
CLOUDS(%)            1  2  4  2  3  3  1  3  1 13  3  2  2  1  3  9  1  2  3  2
VSBY                10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           0           0           0           0
MIX HGT              2  3  3 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  2  4  3 <1
T WIND DIR           N  N  N  N  N  N  N  N  N  N  N  N  N  N NW NW  N  N  N NW
T WIND SPD          19 18 18  6  6  6  6  8 19 13 13  4  5  5  5  6 11 13 13  4
DISPERSION                   VP VP VP VP             VP VP VP VP             VP
ADI                 44 68 70  3  3  3  3  8 57 55 57  2  3  3  3  7 24 60 56  2
MAX LVORI            1  1  1  3  6  9  9  8  3  1  1  5  8  9  9  8  3  1  1  3
STABILITY            B  B  B  G  G  G  G  B  B  B  B  G  G  G  G  A  B  B  B  G
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            29.58 29.55 29.57 29.55 29.56 29.48 29.47 29.44 29.45 29.43


Date          Fri 10/23/26Sat 10/24/26Sun 10/25/26Mon 10/26/26
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       45      66      39      63      38      69      43      74
TEMP          48 46 61 52 44 40 59 53 43 41 63 58 46 44 70 63
DEWPT         45 46 49 46 42 40 46 48 43 41 48 48 45 44 48 50
RH            89100 65 80 93100 62 83100100 58 69 96100 45 62
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    CL CL FW CL CL CL CL CL FW CL CL CL FW FW FW FW
POP 12HR            0       0       0       0       0       0       0       0

$$


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