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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
245 PM EDT Fri Jul 17 2026
VAZ018-180800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
245 PM EDT Fri Jul 17 2026
Date 07/17/26 Sat 07/18/26 Sun 07/19/26 Mon
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 72 84 71 88 66
TEMP 90 81 76 74 72 75 82 83 83 79 74 73 72 73 81 87 85 76 70 68 66 68
DEWPT 67 68 67 68 68 70 70 69 69 69 69 69 69 69 71 70 68 67 65 65 64 65
MIN/MAX RH 86 61 91 55 94
RH 47 65 74 82 87 84 67 63 63 72 84 87 90 87 72 57 57 74 84 90 93 90
WIND DIR SE SW W N W W W W W W W W W NW NW NW NW NW NW N N E
WIND SPD 3 1 1 0 1 2 4 6 6 5 6 5 5 6 4 4 4 2 2 1 1 1
WIND GUST 16 19 20 21 23 23 23 21 16
CLOUDS SC SC B1 B1 B1 SC SC B2 B1 SC B1 B1 B2 B1 SC SC SC SC FW SC SC B1
CLOUDS(%) 45 46 55 66 61 34 47 70 55 38 56 53 78 60 38 48 48 30 22 32 50 52
VSBY 4 4 10 10 10 10 10 3 6 7 7 10 10 7 7 7 7 7
POP 12HR 5 60 30 20 10
RAIN SHWRS NM SC IS IS
TSTMS SC SC IS IS
Obvis K K
MIX HGT 5 <1 <1 <1 <1 <1 4 4 4 <1 <1 <1 <1 1 3 5 6 <1
T WIND DIR S S NE W W W W W W W W W W W NW NW NW NW
T WIND SPD 5 11 1 2 3 9 11 13 17 16 11 10 6 12 12 9 8 11
DISPERSION VP VP VP VP PR PR PR PR VP VP VP VP
ADI 39 5 1 1 2 9 56 53 62 7 8 7 5 24 50 60 56 5
MAX LVORI 1 3 4 4 5 4 1 1 1 3 4 5 6 4 3 1 1 3
STABILITY A F F F F A A C C F E E E C A A A G
CEILING None 5000 11700 None None None 1400 None None None
STA PRES 27.84 27.84 27.81 27.80 27.71 27.69 27.67 27.72 27.70
Date 07/20Tue 07/21/26Wed 07/22/26Thu 07/23/26Fri 07/24/26
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 86 68 90 70 84 61 81 61 83
TEMP 83 77 70 70 87 80 73 71 82 75 65 63 79 72 63 64 81 74
DEWPT 68 68 66 68 69 69 68 69 68 63 60 59 60 60 58 58 62 62
RH 61 74 87 93 55 69 84 93 63 66 84 87 52 66 84 81 53 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC B1 B2 B1 B2 B1 B1 B1 SC FW SC FW FW FW SC SC
POP 12HR 30 10 40 60 40 10 5 5 20
RAIN SHWRS SC SC NM SC IS SC IS
TSTMS SC SC SC IS 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