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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1131 PM EDT Fri Aug 15 2025
VAZ018-160800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1131 PM EDT Fri Aug 15 2025
Date 08/15/25 Sat 08/16/25 Sun 08/17/25 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 68 87 67 89 68
TEMP 70 69 70 80 85 83 76 71 69 67 69 81 87 86 78 73 71 69 71
DEWPT 67 67 68 72 71 71 69 68 67 66 67 70 68 69 69 67 67 67 67
MIN/MAX RH 97 63 96 53 92
RH 90 93 93 77 63 67 79 90 93 97 93 69 53 57 74 81 87 93 87
WIND DIR N N NE SE SE E S SE S SW W NW NW NW NW NW NW NW NW
WIND SPD 1 1 1 2 2 2 1 1 1 1 1 2 3 3 2 2 2 2 2
CLOUDS SC SC SC SC SC SC SC FW FW FW FW FW SC SC SC SC SC SC SC
CLOUDS(%) 37 34 49 28 42 41 48 21 20 21 24 25 31 34 26 27 29 30 27
VSBY 9 4 2 10 10 10 10 9 7 3 5 9 10 10 10 9 7 6
POP 12HR 5 20 10 10 10
RAIN SHWRS IS
TSTMS IS
MIX HGT <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR N NW NE E NE NE SE S SE SW W NW NW NW NW
T WIND SPD 2 2 1 4 3 2 5 5 1 1 1 3 4 3 1
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 16 20 11 3 3 1 1 1 14 33 24 1
MAX LVORI 7 7 7 4 2 3 5 6 8 9 7 3 1 2 4
STABILITY G G A A A A F G G G A A A A G
CEILING None None None None None None None None
STA PRES 27.94 27.93 27.87 27.85 27.82 27.81 27.77
Date 08/18Tue 08/19/25Wed 08/20/25Thu 08/21/25Fri 08/22/25
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 68 84 66 81 65 79 63 75
TEMP 85 76 70 70 81 73 68 68 79 70 66 66 76 69 64 64 74 67
DEWPT 68 70 67 68 71 70 67 66 69 68 65 64 65 64 61 62 64 63
RH 57 82 90 93 72 90 97 93 72 93 97 93 69 84 90 93 71 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 SC B1 B1 B1 B2 B1 B1 B2 B1 B1 B1 B2 B2 B2
POP 12HR 30 20 40 40 60 50 40 30 30
RAIN SHWRS SC IS IS SC SC IS SC NM SC SC SC SC SC IS SC
TSTMS SC IS IS SC SC IS SC IS IS SC
$$
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
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