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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
132 AM EDT Sat Jul 26 2025
VAZ020-270800-
RAWS 441801
37.99N 79.76W Elev. 2160 ft
132 AM EDT Sat Jul 26 2025
Date 07/25/25 Sat 07/26/25 Sun 07/27/25 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 69 91 70 92 71
TEMP 71 69 73 82 87 87 83 76 74 71 74 85 88 88 78 74 73 71 75
DEWPT 67 67 69 70 69 70 73 70 70 69 71 72 72 71 71 70 70 69 72
MIN/MAX RH 92 51 100 60 93
RH 87 93 87 67 55 57 72 82 87 93 90 65 59 57 79 87 90 93 90
WIND DIR NW NW NW W S SW NE W W W W W W W W NW NW NW NW
WIND SPD 2 2 2 1 1 2 1 2 2 2 2 2 2 2 2 2 2 2 2
CLOUDS FW SC SC FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
CLOUDS(%) 10 27 39 22 42 43 43 46 34 36 50 31 42 27 49 43 35 38 40
VSBY 8 6 10 10 10 10 10 5 2 4 10 4 10 10 10 3 10 1 8
POP 12HR 10 50 20 50 20
RAIN SHWRS SC SC IS IS IS SC SC IS IS
TSTMS SC SC SC SC IS IS
Obvis PF
MIX HGT <1 <1 <1 4 5 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1
T WIND DIR NW NW NW N SW SW S NW NW NW NW W W NW NW NW NW NW NW
T WIND SPD 3 3 3 2 2 3 1 2 2 2 2 10 12 12 10 3 3 4 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 2 3 12 15 14 1 1 1 1 2 45 76 45 5 2 2 2 2
MAX LVORI 7 7 6 3 2 2 4 5 6 7 6 1 1 1 4 6 6 6 6
STABILITY G G A A A A F F G G A A A A F F G G A
CEILING None None None None None None None None None
STA PRES 27.95 27.96 27.91 27.92 27.93 27.95 27.92 27.94 27.94
Date 07/28Tue 07/29/25Wed 07/30/25Thu 07/31/25Fri 08/01/25
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 92 70 95 70 95 71 90 66 81
TEMP 89 79 73 74 92 81 74 75 93 80 74 74 86 73 69 67 78 68
DEWPT 73 71 69 70 70 69 68 69 69 67 67 69 72 68 66 64 63 60
RH 59 77 87 87 49 67 82 82 46 65 79 84 63 84 90 90 60 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC FW FW FW FW FW SC SC B1 B1 B2 B2 B1 B1
POP 12HR 50 10 30 5 20 30 70 50 50
RAIN SHWRS SC SC IS SC IS SC NM SC IS SC SC
TSTMS SC SC IS SC 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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