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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
532 PM EDT Thu Aug 27 2026
VAZ024-280800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
532 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 65 88 64 87 66
TEMP 75 69 67 66 66 79 86 83 74 68 66 65 65 79 86 84 75 69 67 66 67
DEWPT 70 69 67 66 66 71 70 69 70 68 66 65 65 70 69 69 69 68 67 66 67
MIN/MAX RH 100 57 100 57 100
RH 84100100100100 77 59 63 87100100100100 74 57 61 82 97100100100
WIND DIR W N N N NW N E E NE N N N N E E SE SE N N N N
WIND SPD 1 0 0 0 1 1 1 1 1 0 0 1 1 1 3 2 1 0 0 0 0
CLOUDS B2 B1 SC SC B1 B1 B1 B1 OV B2 B1 SC SC B1 SC SC SC SC SC SC SC
CLOUDS(%) 75 52 48 46 56 62 61 59 92 70 51 39 41 52 41 33 32 26 29 39 35
VSBY 10 10 6 3 1 10 10 10 10 6 10 10 10 10 10 10 10
POP 12HR 30 50 30 10 5
RAIN SHWRS SC SC SC SC IS
TSTMS SC SC SC IS
MIX HGT <1 <1 <1 <1 <1 3 5 2 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR S S N N NW N SE S SW SE E N NE NE SE N SE
T WIND SPD 3 1 0 2 1 2 1 8 4 1 1 1 4 1 1 0 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 0 1 1 8 6 24 2 1 1 1 4 4 6 0 2
MAX LVORI 5 10 10 10 10 4 3 2 6 10 10 10 9 3 3 3 5
STABILITY F F F F B B B B F F F G A B A A G
CEILING None None 3700 4200 3700 None None None None
STA PRES 28.51 28.52 28.56 28.52 28.56 28.60 28.65 28.63
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 90 66 94 69 96 70 96 71 94
TEMP 88 80 69 68 92 83 72 72 94 85 74 73 94 84 73 73 92 83
DEWPT 69 68 67 67 67 67 67 67 68 69 68 69 69 70 69 69 70 70
RH 54 67 93 97 44 59 84 84 43 59 82 87 44 63 87 87 49 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW FW FW FW FW FW FW FW SC SC SC FW SC
POP 12HR 5 0 0 0 5 5 20 20 20
RAIN SHWRS IS IS IS
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