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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Thu Aug 27 2026
VAZ018-272000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 AM EDT Thu Aug 27 2026
Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26
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 84 65 84 65 84
TEMP 69 69 77 81 83 76 71 69 67 68 76 81 82 71 67 66 65 66 78 84 81 72
DEWPT 63 64 66 66 68 66 65 64 64 65 67 67 66 65 63 62 61 62 67 67 66 65
MAX/MIN RH 60 96 58 89 57
RH 81 84 69 60 61 71 81 84 90 90 74 63 58 81 87 87 87 87 69 57 60 79
WIND DIR W W SW S SE W W NW NW NW N NW W NE N N N N E SE SE SE
WIND SPD 2 2 2 3 3 2 1 1 2 2 1 2 2 2 1 1 1 2 2 3 3 2
CLOUDS FW SC SC B1 B2 B1 SC SC B1 SC B1 SC SC B2 SC SC SC SC SC SC SC FW
CLOUDS(%) 21 27 45 69 81 51 40 45 52 38 56 43 48 72 40 45 33 35 35 28 30 23
VSBY 7 5 10 10 10 10 8 5 3 4 9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 20 30 10 10
RAIN SHWRS SC SC IS IS IS
TSTMS SC SC IS IS IS
Obvis PF PF
MIX HGT <1 <1 3 5 2 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR W W W SW S SW W W NW NW NE N N E SE NE NE NE NE S SE SE
T WIND SPD 3 3 3 6 6 3 1 2 2 2 2 1 2 3 8 2 2 4 3 2 5 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 3 15 38 19 2 1 1 1 2 8 8 9 2 4 1 1 4 13 13 27 3
MAX LVORI 5 5 3 1 2 3 6 6 7 6 3 3 2 5 6 6 6 5 3 2 2 5
STABILITY G A A B B F G F F A B A A F G F G A A A A G
CEILING None 2300 None None None None None None None None
STA PRES 27.82 27.77 27.79 27.79 27.83 27.81 27.86 27.90 27.96 27.93
Date Sun 08/30/26Mon 08/31/26Tue 09/01/26Wed 09/02/26
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 66 87 67 90 68 92 69 90
TEMP 67 67 86 77 69 69 88 79 71 70 89 79 72 71 88 78
DEWPT 63 65 66 64 63 64 66 65 64 64 67 67 65 66 69 68
RH 87 93 51 64 81 84 48 62 79 81 48 67 79 84 54 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC FW FW FW FW FW FW FW FW FW FW FW FW B1
POP 12HR 5 5 0 5 0 10 10 30
RAIN SHWRS SC
TSTMS 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