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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Aug 27 2026
VAZ046-280800-
RAWS 441101
37.39N 78.80W Elev. 804 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 67 85 66 86 67
TEMP 70 69 67 68 79 84 84 75 69 68 66 67 77 83 85 78 70 68 67 68
DEWPT 69 69 67 68 72 72 71 71 69 68 66 67 70 70 70 70 69 68 67 68
MIN/MAX RH 100 64 100 60 100
RH 97100100100 79 67 65 87100100100100 79 65 61 76 97100100100
WIND DIR SW SE S NW NE NE E E N N N NE NE E E SE SE NE N SW
WIND SPD 2 1 1 1 2 3 3 2 1 1 2 3 5 5 4 2 1 1 0 1
CLOUDS B1 SC SC B1 B1 B1 B1 B1 OV B2 B1 B1 B1 B1 SC SC SC SC SC SC
CLOUDS(%) 63 43 49 56 60 59 69 60 91 81 69 67 63 59 42 29 27 30 34 31
VSBY 10 8 5 4 10 10 9 10 9 10 10 10 10 10 10 10
POP 12HR 30 50 40 5 5
RAIN SHWRS SC IS SC SC SC SC IS
TSTMS SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 2 4 6 <1
T WIND DIR S S S SW W SW SW SW S SW SW S SE S SE SE
T WIND SPD 3 3 1 2 2 2 11 5 4 2 1 1 1 2 2 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 2 8 13 41 3 2 1 1 1 3 9 16 3
MAX LVORI 8 10 10 9 4 3 1 6 9 10 10 10 4 3 2 3
STABILITY F G F A B B B F F F F B C C A G
CEILING None None 9200 3500 8700 2200 2800 None None
STA PRES 29.30 29.31 29.34 29.31 29.35 29.39 29.44 29.41
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 89 69 93 71 95 72 96 72 94
TEMP 86 81 71 70 91 84 74 73 93 85 75 74 93 85 74 74 91 83
DEWPT 71 69 69 69 68 68 68 68 68 69 68 69 69 70 69 70 70 70
RH 61 67 93 97 47 59 82 84 44 59 79 84 46 61 84 87 50 65
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 SC FW SC
POP 12HR 5 0 0 0 5 5 10 20 30
RAIN SHWRS IS 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