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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Aug 28 2026
VAZ024-290800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Fri Aug 28 2026
Date 08/28/26 Sat 08/29/26 Sun 08/30/26 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 86 66 91 67
TEMP 70 66 64 65 78 83 84 76 69 67 66 67 81 88 90 81 73 70 68 69
DEWPT 66 65 63 64 67 66 66 67 67 67 66 67 70 69 68 68 68 68 67 67
MIN/MAX RH 100 53 100 47 99
RH 87 97 97 97 69 57 55 74 93100100100 69 54 49 65 84 93 97 93
WIND DIR N E N N E SE SE SE N N N N SW SW S S SW N N NW
WIND SPD 1 1 1 2 3 5 4 1 0 0 0 0 1 3 3 2 1 0 0 1
CLOUDS SC SC SC SC SC B1 SC FW SC SC FW SC SC SC FW FW FW FW CL FW
CLOUDS(%) 39 41 40 33 49 52 35 16 26 29 17 30 29 26 21 24 18 13 5 8
VSBY 10 10 3 10 10 10 10 10 10 10 6 6 10 10 10 10
POP 12HR 10 10 5 0 0
RAIN SHWRS
TSTMS
Obvis PF
MIX HGT <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR N NE NE NE E SE S SE NE N N N W W SW SW
T WIND SPD 5 4 4 5 9 5 5 3 2 1 0 0 8 6 6 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 6 35 32 32 2 1 1 0 0 31 42 46 1
MAX LVORI 6 9 9 9 3 1 1 4 7 10 10 10 3 1 1 3
STABILITY G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.61 28.65 28.70 28.67 28.68 28.68 28.69 28.61
Date 08/31Tue 09/01/26Wed 09/02/26Thu 09/03/26Fri 09/04/26
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 95 70 97 72 98 72 96 70 94
TEMP 94 84 73 73 95 86 75 74 96 86 75 74 94 84 73 72 91 82
DEWPT 66 67 67 67 67 68 68 69 68 68 68 69 68 68 68 68 68 68
RH 40 57 81 81 40 55 79 84 40 55 79 84 43 59 84 87 47 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC FW FW FW FW SC SC FW SC SC FW FW B1
POP 12HR 0 0 5 0 10 10 20 10 30
RAIN SHWRS IS SC
TSTMS 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