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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Aug 27 2026
VAZ018-280800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Thu Aug 27 2026
Date 08/27/26 Fri 08/28/26 Sat 08/29/26 Sun
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 64 83 63 83 65
TEMP 67 66 64 65 78 83 79 70 66 65 64 64 76 82 80 71 68 66 66 66
DEWPT 66 65 64 65 69 68 68 66 65 64 63 64 68 68 68 66 65 65 65 66
MIN/MAX RH 100 61 99 62 100
RH 97 97100100 74 61 69 87 97 97 97100 76 63 67 84 90 97 97100
WIND DIR NW W NW NW N N N N N N N N E SE SE SE SE N N N
WIND SPD 1 1 2 2 2 2 2 1 1 1 1 2 2 3 3 2 1 0 0 0
CLOUDS SC B1 B1 SC B1 B1 B1 B1 B1 SC SC B1 B1 SC SC SC SC SC SC SC
CLOUDS(%) 50 53 54 49 51 63 55 64 58 44 40 64 52 38 32 29 39 32 30 41
VSBY 8 5 2 1 10 10 10 10 9 10 10 10 10 10 10 10
POP 12HR 30 50 20 10 0
RAIN SHWRS SC SC SC IS
TSTMS IS SC SC
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR SE W NW NW N N S W NW NW NW N N N N E
T WIND SPD 2 1 2 1 2 2 4 5 2 3 3 2 4 1 0 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 1 9 13 18 3 1 2 2 2 16 7 0 3
MAX LVORI 8 9 10 10 3 2 3 6 8 8 10 9 3 3 4 5
STABILITY G F F A A B B F F F G B B A A G
CEILING 4700 None None 2900 2700 None None None None
STA PRES 27.81 27.81 27.86 27.83 27.86 27.90 27.94 27.93
Date 08/30Mon 08/31/26Tue 09/01/26Wed 09/02/26Thu 09/03/26
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 88 66 90 69 92 70 92 69 90
TEMP 86 76 68 68 88 79 71 70 90 80 73 72 90 79 73 70 88 78
DEWPT 68 66 64 64 66 65 64 65 68 67 65 66 69 68 66 67 69 68
RH 55 71 87 87 48 62 79 84 49 65 76 81 50 69 79 90 54 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW FW FW FW FW FW FW FW SC FW SC SC
POP 12HR 5 0 0 0 5 5 20 10 30
RAIN SHWRS IS SC
TSTMS 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