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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Thu May 7 2026
VAZ012-080800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 PM EDT Thu May 7 2026
Date 05/07/26 Fri 05/08/26 Sat 05/09/26 Sun
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 34 68 43 73 47
TEMP 54 46 39 35 40 57 64 67 60 49 45 44 48 62 68 71 65 55 50 48 52
DEWPT 37 34 31 29 31 33 33 33 35 36 38 38 41 44 45 46 47 48 47 46 49
MIN/MAX RH 79 28 80 40 95
RH 52 63 73 78 70 40 31 28 39 61 76 79 77 52 43 41 52 77 89 93 89
WIND DIR NW NW NW NW NW W W W SW S SW SW SW SW W W W W W W W
WIND SPD 6 5 3 2 2 3 4 5 4 3 3 1 2 5 5 4 2 2 1 1 1
WIND GUST 16 14
CLOUDS SC CL CL CL CL CL FW CL FW CL FW B1 B1 FW SC SC FW SC SC SC SC
CLOUDS(%) 32 3 1 2 2 1 6 3 12 5 19 69 53 25 44 27 25 37 31 35 30
VSBY 10 10 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 3
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR NW NW NW NW W NW W SW S S S S SW W W W W
T WIND SPD 12 8 4 3 2 9 8 10 6 8 6 5 17 25 24 20 5
DISPERSION PR PR VP VP VP VP VP VP VP VP VP VP
ADI 6 4 2 2 2 45 60 75 3 4 3 3 18136158120 3
MAX LVORI 2 3 3 4 3 1 1 1 2 3 4 5 3 1 1 1 2
STABILITY F F G G A A A A F G G F B A A A G
CEILING None None None None None 14600 None None None
STA PRES 27.16 27.20 27.23 27.15 27.14 27.09 27.10 27.10
Date 05/10Mon 05/11/26Tue 05/12/26Wed 05/13/26Thu 05/14/26
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 77 48 64 36 67 45 70 44 71
TEMP 73 67 54 50 60 55 40 41 62 58 48 49 66 61 49 48 66 62
DEWPT 47 50 49 45 40 34 33 33 33 36 38 40 45 46 45 44 44 45
RH 40 54 83 83 47 45 76 73 33 44 68 71 47 58 86 86 45 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B2 B1 SC FW CL FW SC SC SC B1 B1 SC SC B1 SC
POP 12HR 20 60 30 0 5 20 50 30 20
RAIN SHWRS IS IS NM SC IS SC SC SC 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