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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Fri Jul 24 2026
VAZ024-242000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
731 AM EDT Fri Jul 24 2026
Date Fri 07/24/26 Sat 07/25/26 Sun 07/26/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 77 61 78 62 89
TEMP 65 72 75 76 70 67 66 63 64 70 75 78 74 68 65 63 65 79 86 88 81
DEWPT 61 62 63 63 64 64 63 63 64 65 65 66 66 65 63 61 64 66 66 66 67
MAX/MIN RH 64 100 65 97 47
RH 87 71 66 64 81 90 90100100 84 71 67 76 90 93 93 97 64 51 48 63
WIND DIR NE E SE SE E E E E E E SE SE S N N N N NW NW NW NW
WIND SPD 2 4 4 3 2 2 2 2 1 1 2 2 2 0 0 0 0 1 2 1 1
CLOUDS B2 B2 B2 B1 B2 B2 OV B2 B2 B2 B1 SC SC SC SC SC SC FW SC SC SC
CLOUDS(%) 77 72 74 62 82 84 88 75 80 75 68 45 33 34 35 38 33 16 34 31 37
VSBY 10 10 10 10 7 6 6 7 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 60 10 10 10
RAIN SHWRS SC SC SC SC
MIX HGT <1 3 4 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 3 6 5 <1
T WIND DIR E E E E N NE NE E NE NE SW W SW S W NW NW N NW NW S
T WIND SPD 6 12 10 10 0 2 3 4 4 3 1 3 3 2 1 3 3 6 3 3 1
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 7 38 37 35 0 1 2 2 5 7 4 14 2 1 1 2 3 30 25 22 1
MAX LVORI 5 3 3 3 6 7 7 9 9 4 3 3 4 7 9 8 8 3 2 2 3
STABILITY B C C B F F F F B B B A G G G G A A A A G
CEILING 3500 5000 3700 2100 2400 None None None None None
STA PRES 28.67 28.62 28.62 28.58 28.58 28.52 28.48 28.47 28.45 28.39
Date Mon 07/27/26Tue 07/28/26Wed 07/29/26Thu 07/30/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 63 92 67 93 67 91 63 90
TEMP 67 67 89 83 71 71 91 83 71 70 89 82 68 67 88 82
DEWPT 65 66 68 70 68 69 71 71 69 69 67 66 64 64 63 65
RH 93 97 50 65 90 93 52 67 93 97 48 58 87 90 43 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC B1 B1 B1 SC SC B1 FW FW FW SC
POP 12HR 10 20 20 40 30 30 20 10
RAIN SHWRS IS IS SC SC IS SC SC IS
TSTMS IS 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