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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Tue Aug 25 2026
VAZ024-252000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
331 AM EDT Tue Aug 25 2026
Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26
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 84 57 87 65 88
TEMP 55 57 71 79 82 73 65 62 60 61 79 85 84 75 70 67 65 67 80 87 84 75
DEWPT 52 50 55 55 55 56 54 54 52 55 62 65 67 67 67 66 65 67 70 69 70 69
MAX/MIN RH 40 87 51 100 56
RH 90 77 57 44 40 55 68 75 75 81 56 51 57 76 90 97100100 72 55 63 82
WIND DIR N N N S S S S SW W SE SE S S S N N N N S SW SW S
WIND SPD 0 0 2 1 2 3 1 1 1 1 2 5 4 2 0 0 0 0 1 3 3 1
CLOUDS FW FW FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B1
CLOUDS(%) 7 15 25 19 10 8 13 8 11 36 43 69 51 59 59 62 52 49 60 67 67 59
VSBY 8 9 10 10 10 10 7 6 6 10 10 10 10 10 8 10 10 10 10 10 10 10
POP 12HR 0 0 20 40 50
RAIN SHWRS IS IS SC SC SC SC SC
TSTMS IS IS SC SC SC SC
MIX HGT <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 2 5 4 <1
T WIND DIR NW NW N E SW S N NW N N S S S S S S SE SE SW S S S
T WIND SPD 3 3 4 1 2 2 0 2 3 1 9 11 12 6 11 3 2 2 8 8 11 11
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 3 17 7 15 1 0 1 2 1 33 49 48 3 5 2 1 2 25 49 54 5
MAX LVORI 7 4 2 2 2 3 4 4 4 4 1 1 1 4 5 8 10 9 3 1 1 4
STABILITY G A A A A G G G G A A C C F F F F A B B B F
CEILING None None None None None None 20100 None 300 2500
STA PRES 28.62 28.57 28.60 28.60 28.61 28.54 28.53 28.52 28.52 28.46
Date Fri 08/28/26Sat 08/29/26Sun 08/30/26Mon 08/31/26
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 64 88 63 86 65 88 66 93
TEMP 67 67 87 76 66 66 84 76 67 67 87 79 69 69 91 82
DEWPT 67 67 68 68 66 66 68 67 66 67 69 68 67 67 68 68
RH 100100 53 76100100 59 74 97100 55 69 93 93 47 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 B1 B1 SC B1 SC SC SC SC FW SC SC SC
POP 12HR 40 40 20 20 10 10 5 5
RAIN SHWRS SC SC IS IS
TSTMS SC SC 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