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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Oct 17 2026
VAZ024-172000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Sat Oct 17 2026
Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26
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 57 35 60 35 66
TEMP 51 56 56 48 43 39 37 36 49 57 58 48 42 39 37 36 53 63 65 55
DEWPT 44 37 35 32 32 31 29 27 30 30 32 34 32 32 31 30 36 38 41 41
MAX/MIN RH 45 71 36 80 38
RH 77 49 45 54 65 73 72 69 48 35 37 58 67 76 79 79 52 39 41 59
WIND DIR N N N N N N N N NE NE NE NE N N N N N NE NE N
WIND SPD 10 10 9 5 3 3 3 4 6 5 5 3 3 2 3 4 3 4 4 3
WIND GUST 21 20 12 14 17
CLOUDS B2 B1 CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW SC
CLOUDS(%) 77 59 5 5 4 4 2 2 1 3 2 2 8 9 8 11 10 15 24 27
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 0 0 0 0
RAIN SHWRS
MIX HGT 4 5 5 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N N N N N N N N NE NE NE NE N N N N NE NE NE N
T WIND SPD 24 21 19 8 6 5 3 4 13 11 10 3 3 4 4 4 12 11 13 6
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 64 68 78 4 3 3 2 5 42 50 36 2 2 2 2 5 31 43 42 3
MAX LVORI 4 1 1 3 3 3 3 3 1 1 1 3 3 3 4 4 1 1 1 3
STABILITY D D C F G G G B B B B G G G G B B B B G
CEILING 2000 None None None None None None None None None
STA PRES 28.68 28.77 28.88 28.94 29.02 28.97 28.97 28.93 28.91 28.82
Date Tue 10/20/26Wed 10/21/26Thu 10/22/26Fri 10/23/26
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 40 72 42 69 42 70 44 72
TEMP 45 41 71 60 47 44 68 58 47 43 67 60 50 45 70 60
DEWPT 38 34 41 42 41 41 46 46 45 42 47 49 47 45 49 49
RH 76 76 34 51 79 89 45 64 93 96 49 67 89100 47 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW SC SC SC SC SC FW FW
POP 12HR 0 5 0 5 5 5 0 5
$$
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