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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Fri Jul 24 2026
VAZ046-250800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
301 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 63 76 62 86 64
TEMP 78 74 69 65 64 65 68 73 76 73 67 65 64 66 78 83 85 79 70 67 65 68
DEWPT 61 62 62 64 64 65 67 68 68 68 67 65 64 66 69 68 67 69 68 67 65 68
MIN/MAX RH 100 77 100 56 100
RH 56 66 78 97100100 97 84 76 84100100100100 74 61 55 72 93100100100
WIND DIR E E E E E NE NE NE E SE SW W W NW N N SE SE S SW SW SW
WIND SPD 4 2 3 3 4 4 4 4 3 1 1 1 1 1 2 3 2 2 2 1 2 2
CLOUDS OV B2 B2 B2 B2 B2 B2 B2 B1 SC FW SC SC FW FW SC SC B1 B1 FW SC SC
CLOUDS(%) 88 85 81 81 85 80 83 75 60 41 22 41 26 13 18 27 32 53 53 20 32 44
VSBY 10 7 6 4 4 4 7 10 10 10 9 8 7 9 7 7 7 7 7 10 10
POP 12HR 80 40 5 20 30
RAIN S C L D C
RAIN SHWRS IS IS IS SC SC
TSTMS IS IS SC IS
MIX HGT 4 <1 <1 <1 <1 <1 2 2 3 <1 <1 <1 <1 <1 4 5 4 <1
T WIND DIR E E W N E E E E N SW W W W N N N N E
T WIND SPD 8 4 2 2 3 8 5 5 1 1 2 2 2 2 6 4 1 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 28 2 1 1 2 10 12 16 4 1 1 1 1 2 35 28 6 1
MAX LVORI 2 3 5 8 9 8 6 4 4 6 10 10 10 9 3 2 3 3
STABILITY C F F F E C C C B F G F G A A A A F
CEILING 3200 3200 3500 None None None None None None
STA PRES 29.41 29.39 29.38 29.32 29.30 29.27 29.24 29.17
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 89 69 90 68 87 66 86 66 87
TEMP 87 81 72 71 88 81 71 71 85 80 68 69 85 79 68 70 85 79
DEWPT 69 71 69 70 74 74 71 70 70 69 65 66 66 68 66 67 68 69
RH 55 72 90 97 63 79100 97 61 69 90 90 53 69 93 90 57 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 B2 B1 SC SC SC SC FW FW FW SC SC FW SC
POP 12HR 5 20 60 40 20 10 10 10 20
RAIN SHWRS IS IS IS NM SC IS IS
TSTMS IS SC SC 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