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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Mon May 11 2026
VAZ012-120800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 PM EDT Mon May 11 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 71 45 69 41
TEMP 61 56 46 40 38 45 61 67 70 63 52 48 46 50 62 65 68 62 54 48 43 42
DEWPT 41 37 36 34 32 36 38 39 38 42 40 39 38 42 47 49 50 50 47 44 39 37
MIN/MAX RH 78 31 73 51 85
RH 48 49 68 79 79 70 42 36 31 46 63 71 73 74 58 56 52 65 77 86 86 82
WIND DIR N N N N N SW SW SW SW SW S SW SW SW SW SW W W W NW NW NW
WIND SPD 2 1 0 0 0 1 2 2 2 1 2 2 2 3 5 6 6 3 3 2 3 6
WIND GUST 16 18 18
CLOUDS FW FW CL CL CL CL CL SC SC FW CL CL FW B1 B1 B2 B2 B1 SC SC SC SC
CLOUDS(%) 21 9 4 2 3 2 1 26 28 14 5 3 13 52 68 86 86 60 48 32 42 38
VSBY 7 10 10 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 60 40
RAIN SHWRS IS SC SC NM SC IS
TSTMS SC SC
MIX HGT 4 <1 <1 <1 <1 <1 5 6 6 <1 <1 <1 <1 <1 4 2 4 <1
T WIND DIR N N W W W W NW W W SW S S SW SW SW SW SW SW
T WIND SPD 14 8 3 3 4 2 9 9 9 5 4 5 5 6 26 16 17 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 84 4 2 2 2 2 58 68 70 3 2 3 3 7103 45 60 5
MAX LVORI 1 2 3 3 5 3 1 1 1 2 3 3 4 3 1 1 1 3
STABILITY A F F F G A A A A G G G G B C C C E
CEILING None None None None None None None 2700 1300 None
STA PRES 27.31 27.37 27.38 27.41 27.35 27.34 27.27 27.23 27.12
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 35 68 48 78 55 82 57 84
TEMP 56 50 39 39 64 62 50 52 75 71 58 58 80 75 61 61 82 78
DEWPT 36 36 36 37 38 42 41 44 53 55 53 53 53 55 52 53 54 56
RH 47 58 89 92 38 48 71 74 46 57 83 83 39 50 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 FW FW FW FW SC
POP 12HR 0 0 0 10 20 20 20 5 20
RAIN SHWRS IS IS IS IS IS IS
TSTMS IS 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