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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri Jul 17 2026
VAZ018-172000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
301 AM EDT Fri Jul 17 2026
Date Fri 07/17/26 Sat 07/18/26 Sun 07/19/26
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 90 71 88 70 88
TEMP 70 73 83 87 87 78 74 73 71 73 84 86 84 76 73 72 71 72 80 84 86 78
DEWPT 68 68 68 68 67 69 68 67 68 70 71 69 69 69 69 69 68 69 72 69 67 68
MAX/MIN RH 50 90 56 92 53
RH 93 84 61 53 52 74 82 81 90 90 65 57 61 79 87 90 90 90 77 61 53 71
WIND DIR N N SE S S SE W S W W W W W W W W W W NW NW NW NW
WIND SPD 3 2 2 2 3 2 1 2 2 3 5 9 9 8 8 6 8 6 4 5 5 2
WIND GUST 20 19 21 26 23 21 16 12
CLOUDS SC SC SC SC SC SC B1 B2 B1 SC SC B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC
CLOUDS(%) 32 40 29 41 34 49 54 70 62 40 42 65 83 58 62 66 69 63 57 55 55 39
VSBY 10 10 10 10 5 5 7 10 10 10 10 6 6 7 7 10 10 7 7 7 7 7
POP 12HR 20 20 70 30 30
RAIN SHWRS IS SC NM SC SC IS IS SC SC IS
TSTMS SC IS SC IS IS
Obvis K K
MIX HGT <1 <1 4 5 5 <1 <1 <1 <1 <1 4 5 4 1 <1 <1 <1 2 3 5 5 <1
T WIND DIR NW NW NE SE S S N W NW W W W W W W W W W W W W W
T WIND SPD 3 4 3 2 3 4 1 2 2 6 14 16 18 12 8 12 11 12 16 12 10 9
DISPERSION VP VP VP VP VP PR PR PR PR VP
ADI 2 4 16 16 20 2 1 1 1 7 73 66 67 11 7 8 10 25 65 50 44 4
MAX LVORI 7 5 2 2 2 3 6 5 6 5 1 1 1 4 5 5 5 4 3 1 1 3
STABILITY G A A A A F F F F A A C C D D E D C A C C G
CEILING None None 3600 None None 3600 11100 900 None None
STA PRES 27.92 27.85 27.85 27.81 27.79 27.71 27.69 27.68 27.70 27.69
Date Mon 07/20/26Tue 07/21/26Wed 07/22/26Thu 07/23/26
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 86 68 90 70 86 62 84
TEMP 68 68 83 77 70 71 89 78 72 71 85 74 65 64 83 72
DEWPT 65 65 68 68 66 68 69 69 68 67 66 62 58 58 60 59
RH 90 90 61 74 87 90 52 74 87 87 53 66 78 81 46 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 SC SC SC B1 B1 B1 SC SC SC SC FW SC
POP 12HR 20 30 10 20 50 20 10 10
RAIN SHWRS IS SC IS SC SC IS
TSTMS IS SC IS SC 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