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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1131 PM EDT Fri Aug 15 2025
VAZ012-160800-
RAWS 447502
37.01N 81.18W Elev. 2540 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 63 86 63 86 64
TEMP 66 63 65 79 84 83 74 68 65 63 65 80 85 84 75 69 67 65 67
DEWPT 63 62 64 68 66 66 66 66 64 63 64 66 65 66 67 66 65 65 66
MIN/MAX RH 97 54 100 52 100
RH 90 97 97 69 55 57 76 93 97100 97 62 51 55 76 90 93100 97
WIND DIR N NE E SE E NE E SE S SW W NW NW NW NW NW NW NW NW
WIND SPD 1 1 1 1 2 1 1 1 1 1 1 2 3 2 2 1 1 1 2
CLOUDS SC SC B1 SC SC SC SC FW FW SC SC FW SC SC SC FW FW SC SC
CLOUDS(%) 27 32 56 50 38 45 39 22 10 26 28 23 38 27 33 23 18 37 33
VSBY 8 7 7 10 10 10 10 10 10 3 6 10 10 10 10 10 10 5
POP 12HR 20 10 5 10 10
RAIN SHWRS
Obvis F PF
MIX HGT <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 3 6 4 <1
T WIND DIR NE N W E N N E S S SW SW NW NW NW N
T WIND SPD 1 2 1 2 3 4 3 2 2 2 3 4 5 6 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 8 23 25 2 1 1 1 3 20 40 37 2
MAX LVORI 7 8 8 3 2 2 4 7 8 10 9 2 1 1 4
STABILITY G G B A A A G G G G A A A A G
CEILING None None None None None None None None
STA PRES 27.40 27.40 27.34 27.33 27.29 27.29 27.26
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 88 65 86 65 82 63 78 61 75
TEMP 85 75 67 67 85 74 66 66 80 71 64 64 75 68 63 62 73 67
DEWPT 66 68 65 66 67 69 66 66 67 68 64 64 63 63 60 61 63 61
RH 53 79 93 97 55 84100100 65 90100100 66 84 90 97 71 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B2 B1 B1 B2 B2 B2
POP 12HR 20 20 30 40 60 50 40 30 40
RAIN SHWRS IS IS SC SC IS SC NM SC IS SC SC SC SC SC
TSTMS IS IS SC SC IS SC IS SC 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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