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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat Oct 17 2026
VAZ046-180800-
RAWS 441101
37.39N 78.80W Elev. 804 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 38 59 38 63 43
TEMP 49 45 42 40 39 50 57 57 48 44 42 40 41 56 62 60 52 49 47 44 46
DEWPT 35 33 32 30 30 30 30 32 33 33 32 31 31 36 38 40 40 39 37 35 34
MIN/MAX RH 71 35 71 41 69
RH 58 62 67 67 70 46 35 38 56 65 67 70 67 47 41 47 63 68 68 70 63
WIND DIR N N NE NE NE NE NE NE NE N N N N N N N N N N N N
WIND SPD 8 6 5 6 9 12 11 10 5 4 4 5 6 11 11 9 4 4 5 6 6
WIND GUST 20
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW FW FW
CLOUDS(%) 1 1 1 1 0 1 3 2 1 0 1 1 8 6 12 22 19 24 18 23 16
VSBY 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 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR N N N N N NE NE NE NE N N N N NE N N N
T WIND SPD 10 10 11 10 10 19 17 17 8 5 5 6 9 20 18 18 6
DISPERSION PR PR PR PR PR VP VP PR VP VP PR PR
ADI 7 5 5 5 8 56 58 55 4 3 3 3 10 58 61 59 3
MAX LVORI 3 3 3 3 3 1 1 1 3 3 3 3 3 1 1 1 3
STABILITY E F F F C C C C F F F F B C C C F
CEILING None None None None None None None None None
STA PRES 29.70 29.76 29.83 29.77 29.76 29.70 29.66 29.56
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 71 45 66 43 69 46 68 45 65
TEMP 70 57 49 47 63 56 48 45 66 58 50 47 65 57 50 47 62 58
DEWPT 39 43 43 42 45 46 44 42 45 47 45 44 47 48 47 46 48 49
RH 32 59 80 83 52 69 86 89 47 67 83 89 52 72 89 96 60 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW CL FW FW CL FW FW FW FW FW
POP 12HR 0 0 0 5 0 5 5 10 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