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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Oct 31 2026
VAZ024-010800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Sat Oct 31 2026
Date 10/31/26 Sun 11/01/26 Mon 11/02/26 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 46 63 44 68 41
TEMP 52 49 47 46 57 63 62 55 52 50 48 44 53 66 67 58 49 46 44 42
DEWPT 41 40 40 41 41 39 39 39 39 39 39 41 46 44 43 44 44 43 42 41
MIN/MAX RH 82 41 93 39 98
RH 66 71 76 83 55 41 43 55 61 66 71 89 77 45 42 59 83 89 93 96
WIND DIR E E NE NE E SE SE N N N N N N S S N N N N N
WIND SPD 2 2 2 2 1 3 2 0 0 0 0 0 0 2 2 0 0 0 0 0
CLOUDS B1 OV B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC FW FW FW SC
CLOUDS(%) 66100 87 63 62 81 78 82 73 79 86 72 59 42 33 28 21 23 19 29
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 0 0 0
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR E SE E E SE SE SE SE SE SE SW N SW S S SE
T WIND SPD 4 4 4 3 5 5 6 5 4 4 4 3 5 6 6 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 3 15 18 21 3 2 2 2 3 10 21 16 2
MAX LVORI 3 3 3 4 2 2 2 2 3 3 3 6 4 2 2 3
STABILITY F F F A A C C F F F F C C B B G
CEILING 18200 13600 12600 11500 10500 7700 None None None
STA PRES 28.90 28.91 28.92 28.87 28.87 28.85 28.84 28.77
Date 11/03Wed 11/04/26Thu 11/05/26Fri 11/06/26Sat 11/07/26
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 73 50 72 58 72 56 72 50 69
TEMP 70 60 52 52 69 65 60 59 71 65 59 57 70 63 54 50 67 59
DEWPT 54 54 52 52 61 61 60 59 65 62 59 57 61 57 53 50 53 51
RH 57 81100100 76 87100100 81 90100100 73 81 96100 61 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC B1 B1 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 SC SC
POP 12HR 0 5 20 60 60 60 40 30 20
RAIN SHWRS IS IS SC NM NM NM NM SC SC SC SC SC IS IS
$$
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