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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Fri Jul 24 2026
VAZ024-250800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
731 PM EDT Fri Jul 24 2026
Date 07/24/26 Sat 07/25/26 Sun 07/26/26 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 62 80 61 88 62
TEMP 69 67 65 63 64 70 76 79 75 67 65 63 64 79 86 88 81 71 66 63 66
DEWPT 66 63 63 63 64 68 68 68 68 67 65 63 64 67 65 65 68 66 65 63 66
MIN/MAX RH 100 68 100 46 100
RH 90 87 93100100 93 76 69 79100100100100 67 50 47 65 84 97100100
WIND DIR N N N N N E E SE SE N N N N NW NW NW N N N N N
WIND SPD 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 2 0 0 0 0 0
CLOUDS OV OV B2 B2 B2 B2 B1 SC SC SC SC SC SC FW SC SC SC SC FW SC SC
CLOUDS(%) 92 89 79 82 84 84 64 28 33 30 39 36 27 10 27 30 33 27 18 34 46
VSBY 6 7 1 1 1 10 10 10 10 7 4 4 6 7 7 7 7 10 10 10
POP 12HR 70 20 5 10 10
RAIN C S C L S
Obvis PF F PF
MIX HGT <1 <1 <1 <1 <1 1 2 3 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR E N NE E E SE SE SW N NW NW NW NW N NW NW W
T WIND SPD 3 1 2 2 4 5 4 1 2 2 2 2 3 5 3 4 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 1 5 11 12 4 1 1 1 1 3 26 25 27 1
MAX LVORI 4 6 7 10 9 5 4 3 4 10 10 10 9 3 2 2 3
STABILITY F F F F B B B A G G G G A A A A G
CEILING 400 2100 800 None None None None None None
STA PRES 28.63 28.60 28.59 28.54 28.52 28.49 28.46 28.40
Date 07/27Tue 07/28/26Wed 07/29/26Thu 07/30/26Fri 07/31/26
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 91 67 92 66 90 63 90 64 90
TEMP 89 83 71 70 89 81 70 69 88 81 68 67 87 81 68 67 88 81
DEWPT 67 70 68 69 72 72 69 69 67 66 64 64 64 66 64 65 66 67
RH 48 65 90 97 57 74 97100 50 60 87 90 46 60 87 93 48 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B1 B2 B1 FW FW SC FW FW FW SC SC FW FW SC
POP 12HR 10 30 60 30 10 10 10 10 20
RAIN SHWRS SC IS SC NM SC IS
TSTMS SC SC 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