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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Thu Aug 27 2026
VAZ046-272000-
RAWS 441101
37.39N 78.80W Elev. 804 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 88 67 86 67 87
TEMP 71 72 81 85 87 79 74 71 69 70 78 83 85 76 70 68 67 68 79 84 86 79
DEWPT 65 68 69 68 69 69 69 68 67 68 71 71 70 69 68 68 66 67 70 70 69 69
MAX/MIN RH 56 100 63 100 57
RH 81 87 67 57 55 72 84 90 93 93 79 67 61 79 93100 97 97 74 63 57 72
WIND DIR S S S S S S W SW S N NW SE N N N N N N NE E E SE
WIND SPD 4 3 5 6 6 3 2 2 2 2 2 3 4 2 1 1 2 3 5 5 4 2
CLOUDS SC SC B2 B2 B2 B1 B1 SC SC SC B1 B2 B1 B1 B2 B2 B2 B1 B1 B1 SC FW
CLOUDS(%) 29 35 71 75 78 60 62 38 43 43 51 75 55 63 78 74 74 61 54 54 44 18
VSBY 10 10 10 10 10 10 9 8 8 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 20 30 30 10
RAIN SHWRS IS IS IS SC SC SC
TSTMS IS IS IS SC SC
MIX HGT <1 <1 3 5 4 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR S S SW SW S S S S S SW SW S E E SE N N N NE NE E E
T WIND SPD 2 4 12 10 10 10 14 10 3 9 1 4 3 2 1 1 0 2 6 4 4 3
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 4 40 61 40 5 7 5 2 9 4 25 12 1 1 1 0 2 23 19 30 2
MAX LVORI 5 5 1 1 1 3 4 6 7 6 4 3 2 5 8 10 10 9 3 2 1 3
STABILITY F A C B C F F G F A B B C F F F F B B C A G
CEILING 6500 5600 None None 2200 1900 4900 1200 None None
STA PRES 29.30 29.24 29.27 29.29 29.31 29.31 29.35 29.40 29.45 29.42
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 67 89 69 93 71 95 71 93
TEMP 68 69 87 81 72 71 91 84 73 72 92 85 75 73 91 84
DEWPT 68 69 70 68 68 68 67 67 67 68 69 69 69 69 70 70
RH 100100 57 65 87 90 45 57 81 87 47 59 82 87 50 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC
POP 12HR 10 10 0 5 5 5 10 20
RAIN SHWRS IS
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