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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri Aug 28 2026
VAZ046-282000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
301 AM EDT Fri Aug 28 2026
Date Fri 08/28/26 Sat 08/29/26 Sun 08/30/26
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 87 65 85 66 88
TEMP 67 70 79 84 86 78 69 68 66 66 77 82 83 76 69 67 67 68 79 85 88 81
DEWPT 67 67 69 69 68 68 67 67 66 66 67 68 67 67 68 67 67 68 70 70 69 69
MAX/MIN RH 57 100 58 100 54
RH 100 90 72 61 55 71 93 97100100 71 63 59 74 97100100100 74 61 54 67
WIND DIR SW W N NE NE NE NE N N NE NE E E E E N N SW SW SW S S
WIND SPD 2 2 3 4 6 4 5 4 4 5 8 5 5 3 2 0 0 1 3 5 5 3
CLOUDS SC SC SC B1 B2 B1 B1 B2 B1 B1 B1 B1 SC FW SC SC SC B1 SC SC FW FW
CLOUDS(%) 49 37 45 59 75 52 65 76 61 53 59 62 36 24 36 37 49 52 42 29 24 19
VSBY 4 4 10 9 9 9 8 6 8 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 0 5 5
RAIN SHWRS SC SC IS
TSTMS SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR SW N N N NE NE N N N NE E E E E SE SE E S SW SW SW S
T WIND SPD 1 0 3 6 4 2 2 4 4 11 10 6 8 5 2 2 2 6 6 5 6 12
DISPERSION VP VP PR VP VP VP VP VP VP VP
ADI 1 0 12 28 15 2 2 3 3 9 31 28 50 3 1 1 1 7 27 36 35 6
MAX LVORI 10 6 3 2 2 3 8 9 9 8 3 2 1 4 7 10 10 8 3 1 1 3
STABILITY F A A C C E E E E C C C A G G G F B A A A G
CEILING None 4600 4000 None 2500 None None None None None
STA PRES 29.33 29.32 29.37 29.42 29.48 29.45 29.47 29.48 29.46 29.37
Date Mon 08/31/26Tue 09/01/26Wed 09/02/26Thu 09/03/26
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 69 94 71 95 73 96 72 95
TEMP 71 71 92 84 74 73 93 85 76 74 94 86 76 74 92 84
DEWPT 68 69 67 67 67 68 67 68 68 69 68 69 68 69 69 69
RH 90 93 44 57 79 84 43 57 76 84 43 57 76 84 47 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW FW FW SC FW B1
POP 12HR 0 0 5 10 5 20 20 30
RAIN SHWRS IS IS SC
TSTMS IS 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