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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 PM EDT Sat Aug 16 2025
NCZ001-170800-
RAWS 310141
36.40N 81.29W Elev. 3009 ft
201 PM EDT Sat Aug 16 2025
Date 08/16/25 Sun 08/17/25 Mon 08/18/25 Tue
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 83 64 81 64
TEMP 79 74 69 66 64 65 77 81 81 75 70 67 65 66 77 80 79 73 69 67 65 66
DEWPT 68 67 65 64 63 64 66 64 66 66 64 64 63 65 66 66 68 68 67 66 64 65
MIN/MAX RH 98 56 96 62 100
RH 69 79 87 93 97 97 69 56 60 74 81 90 93 97 69 62 69 84 93 97 97 97
WIND DIR SE SE SE S SW NW NW N NW W NW NW NW N N NE NE E E E E E
WIND SPD 2 2 1 1 1 2 2 3 3 3 3 2 3 3 3 4 3 2 2 1 1 1
CLOUDS SC SC SC SC SC SC SC SC FW SC FW FW FW SC FW SC B1 B1 B1 SC B1 SC
CLOUDS(%) 50 31 26 27 38 41 27 26 18 31 25 19 24 26 22 47 53 52 52 49 62 50
VSBY 7 10 10 1 1 1 10 10 10 10 10 10 10 10 10 6 6 6
POP 12HR 10 5 5 30 30
RAIN SHWRS SC SC SC SC SC IS
TSTMS SC SC SC SC
Obvis PF PF PF
MIX HGT 3 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 3 5 2 <1
T WIND DIR SE SW N NW NW NW NW NW NW NW NW NW NW N N N N N
T WIND SPD 3 3 2 2 3 2 4 6 9 8 5 6 9 14 16 10 8 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 14 2 1 1 2 2 17 46 43 4 3 3 4 15 53 66 17 3
MAX LVORI 3 4 7 8 10 6 3 1 1 3 5 6 6 5 3 1 3 5
STABILITY A G G G G A A A A G G G G A A A B F
CEILING None None None None None None None None None None
STA PRES 27.31 27.31 27.28 27.28 27.21 27.21 27.19 27.23 27.22
Date 08/19Wed 08/20/25Thu 08/21/25Fri 08/22/25Sat 08/23/25
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 79 63 79 63 77 62 71 61 72
TEMP 75 71 66 66 77 71 65 65 75 69 64 63 70 67 62 63 70 67
DEWPT 67 67 66 65 67 67 65 64 66 66 64 63 66 65 62 62 65 65
RH 76 87100 97 71 87100 97 74 90100100 87 93100 97 84 93
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC B1 B1 B1 SC B1 B2 B1 B2 B2 B2 B2 B2 B2 B2
POP 12HR 40 20 50 30 50 40 50 40 50
RAIN SHWRS IS SC IS IS SC SC SC SC SC SC SC SC SC IS SC SC
TSTMS IS SC IS IS SC SC IS SC SC SC SC 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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