National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 AM EDT Mon Oct 19 2026

NCZ005-200800-
RAWS 310540
36.38N  79.70W Elev. 858 ft
101 AM EDT Mon Oct 19 2026

Date           10/18/26      Mon 10/19/26            Tue 10/20/26            Wed
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          64          41          71          44
TEMP                   41 39 39 56 64 64 51 46 44 44 45 63 71 70 55 50 48 46 45
DEWPT                  33 32 32 35 33 32 36 36 35 35 34 41 40 45 44 44 45 44 44
MIN/MAX RH                   76          29          76          32          98
RH                     73 76 76 45 31 30 56 68 70 70 65 44 32 41 66 80 89 93 96
WIND DIR                N  N  N  N  N  N  N  N  N  N  N  N  N  N  N NE  N  N  N
WIND SPD                3  5  5  9  9  8  2  2  3  4  4  6  8  5  2  3  3  4  4
CLOUDS                 CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW CL CL CL CL
CLOUDS(%)               3  3  1  2  3  3  2  3  3  3  1  2  3  2 10  3  3  3  2
VSBY                   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                <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1
T WIND DIR              N  N  N NE  N  N  N  N NW NW NW  N  N  N  N  N  N  N  N
T WIND SPD              4  4  5 17 13 13  3  3  4  4  4 18 13 13  3  5  5  6  6
DISPERSION             VP PR             VP VP VP VP             VP VP VP VP   
ADI                     2  2  6 45 44 50  2  2  2  2  5 54 55 52  2  3  3  3  7
MAX LVORI               3  4  3  1  1  1  3  3  3  3  3  1  1  1  3  4  6  6  6
STABILITY               G  F  B  C  C  B  G  G  G  F  B  B  B  B  G  G  G  F  B
CEILING                    None  None  None  None  None  None  None  None  None
STA PRES                  29.67 29.64 29.53 29.50 29.46 29.46 29.42 29.44 29.45


Date           10/21Thu 10/22/26Fri 10/23/26Sat 10/24/26Sun 10/25/26
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       66      40      69      43      67      41      64      40      67
TEMP          66 56 45 41 69 54 45 45 66 53 46 42 63 51 44 41 66 54
DEWPT         47 45 43 41 46 43 41 43 51 48 44 42 47 45 43 41 49 48
RH            50 66 93100 44 66 86 93 58 83 93100 56 80 96100 54 80
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW FW FW
POP 12HR            0       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