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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Aug 29 2026
VAZ024-300800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Sat Aug 29 2026
Date 08/29/26 Sun 08/30/26 Mon 08/31/26 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 66 92 67 97 71
TEMP 70 68 67 68 81 89 90 80 74 71 68 69 89 96 95 83 76 73 72 73
DEWPT 66 67 66 68 70 68 67 67 67 67 66 67 68 65 65 67 66 66 65 66
MIN/MAX RH 100 46 94 36 83
RH 87 97 97100 69 50 47 65 79 87 93 93 50 36 37 59 71 79 79 79
WIND DIR NE N N N SW S S S N N N NW NW NW NW NW N N N NW
WIND SPD 1 0 0 0 1 3 3 2 0 0 0 1 1 1 2 1 0 0 0 1
CLOUDS FW FW SC B1 SC FW FW FW SC SC FW FW FW SC SC SC SC FW FW FW
CLOUDS(%) 17 25 34 54 30 18 18 25 26 26 11 8 13 26 36 41 44 22 7 10
VSBY 9 5 2 2 10 10 10 10 6 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 0
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR E SE SE S SW SW SW S SW SW W NW NW NW W NW
T WIND SPD 2 1 2 3 6 6 4 3 3 3 2 2 13 9 10 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 4 26 44 26 2 2 2 1 2 77 78 90 2
MAX LVORI 6 9 10 9 3 1 2 3 5 7 7 6 1 1 1 3
STABILITY G G G B A A A G G G G A A A A F
CEILING None None None None None None None None None
STA PRES 28.69 28.71 28.71 28.63 28.62 28.61 28.62 28.59
Date 09/01Wed 09/02/26Thu 09/03/26Fri 09/04/26Sat 09/05/26
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 98 73 100 74 99 71 94 67 90
TEMP 97 86 75 75 98 87 76 76 97 86 75 73 92 82 71 69 87 79
DEWPT 66 68 67 68 67 68 68 68 68 68 69 68 67 67 67 66 66 65
RH 36 55 76 79 37 53 76 76 39 55 82 84 44 61 87 90 50 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW SC SC FW SC SC SC FW B1 SC SC SC B1
POP 12HR 5 0 5 5 10 20 30 20 30
RAIN SHWRS IS SC IS SC
TSTMS 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