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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Tue May 12 2026
VAZ012-130800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 AM EDT Tue May 12 2026
Date 05/11/26 Tue 05/12/26 Wed 05/13/26 Thu
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 37 72 45 71 41
TEMP 40 45 61 67 71 64 52 49 47 50 63 65 66 60 53 48 43 42
DEWPT 31 35 36 37 37 40 40 38 38 41 47 49 50 50 46 43 38 37
MIN/MAX RH 73 29 74 50 85
RH 70 68 39 33 29 41 63 66 71 71 56 56 56 69 77 83 82 82
WIND DIR N SW SW SW SW SW S SW SW SW SW SW W W NW NW NW NW
WIND SPD 0 1 2 3 2 2 2 2 2 2 5 5 5 4 3 3 3 6
WIND GUST 16 17 17
CLOUDS CL CL CL FW FW FW CL CL FW FW SC B2 B1 B1 B1 SC SC SC
CLOUDS(%) 3 2 1 6 8 6 5 1 16 16 32 85 55 57 57 47 42 39
VSBY 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 60 40
RAIN SHWRS IS SC SC SC
TSTMS IS SC IS
MIX HGT <1 <1 5 6 6 <1 <1 <1 <1 <1 4 4 3 <1 1 1 2 2
T WIND DIR SW W W SW SW S S S S S SW SW W W NW NW NW NW
T WIND SPD 2 1 5 8 10 6 6 8 6 11 24 23 24 18 11 20 20 24
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 36 61 76 3 3 4 3 11132 85 82 12 5 9 9 75
MAX LVORI 3 3 1 1 1 2 3 3 3 3 1 1 1 3 4 4 4 3
STABILITY G A A A A G G G G A A C C E F F F B
CEILING None None None None None 2400 2100 1600 None
STA PRES 27.38 27.39 27.34 27.33 27.28 27.22 27.13 27.13 27.14
Date 05/14Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 60 38 72 50 79 55 83 59 85
TEMP 56 54 41 43 67 64 52 55 77 73 59 60 82 77 63 63 83 79
DEWPT 36 35 35 36 37 42 41 45 53 55 53 54 54 56 54 55 55 57
RH 47 48 79 76 33 45 66 69 43 53 80 81 38 48 72 75 38 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC SC SC SC SC SC FW SC SC SC SC FW SC
POP 12HR 0 0 0 5 20 10 20 5 20
RAIN SHWRS IS IS IS
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