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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat Oct 17 2026
VAZ024-180800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
731 PM EDT Sat Oct 17 2026
Date 10/17/26 Sun 10/18/26 Mon 10/19/26 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 35 62 35 67 40
TEMP 49 43 40 37 36 51 59 60 48 42 40 38 36 56 66 65 53 47 45 43 41
DEWPT 34 32 31 29 27 30 30 32 33 31 31 29 29 34 37 39 40 37 35 33 32
MIN/MAX RH 74 32 74 34 71
RH 56 65 70 72 69 44 33 35 56 65 70 70 75 43 34 38 61 68 68 67 70
WIND DIR N N N N N N NE NE N N N N N N N NE N N N N N
WIND SPD 4 3 2 3 3 4 4 3 1 1 1 2 2 3 4 4 3 2 2 2 3
WIND GUST 17
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW
CLOUDS(%) 2 2 1 2 1 2 5 2 4 2 3 1 0 3 6 9 17 17 18 13 9
VSBY 10 10 10 10 10 10 10 10 10 6 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N N N N N NE NE NE NE N N N N NE NE NE N
T WIND SPD 9 5 4 4 4 13 12 11 4 4 4 5 5 13 13 14 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 4 3 2 2 5 41 55 35 2 2 2 3 6 33 52 44 3
MAX LVORI 3 3 3 3 3 1 1 1 3 3 3 3 3 1 1 1 3
STABILITY F G G G B B B B G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 28.88 28.93 29.00 28.94 28.94 28.89 28.85 28.76
Date 10/20Wed 10/21/26Thu 10/22/26Fri 10/23/26Sat 10/24/26
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 74 41 69 40 72 42 70 43 68
TEMP 72 60 47 43 67 59 46 42 69 61 48 44 67 57 48 44 65 59
DEWPT 38 41 40 40 43 44 42 39 43 45 44 42 46 46 46 44 47 47
RH 29 49 76 89 42 57 86 89 39 56 86 93 47 67 93100 52 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW CL FW FW FW CL CL FW CL CL FW FW FW FW FW
POP 12HR 0 0 0 5 0 0 0 5 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