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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu May 7 2026
VAZ012-080800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
131 AM EDT Thu May 7 2026
Date 05/06/26 Thu 05/07/26 Fri 05/08/26 Sat
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 47 61 35 68 44
TEMP 55 52 48 52 58 60 54 47 41 37 41 56 63 67 60 50 46 45 49
DEWPT 52 49 47 45 43 39 37 36 33 31 33 33 33 33 36 38 38 38 42
MIN/MAX RH 94 46 82 28 80
RH 90 89 96 77 57 46 52 65 73 79 73 42 32 28 41 63 73 76 77
WIND DIR W NW NW NW NW NW NW NW NW W W W W SW SW S S SW SW
WIND SPD 1 2 2 3 3 4 3 2 1 1 1 2 3 3 2 2 1 2 2
WIND GUST 16
CLOUDS OV OV B2 B2 B2 SC FW CL CL FW FW CL FW FW FW FW SC SC B1
CLOUDS(%) 88 88 80 76 83 42 22 5 1 19 20 1 9 9 13 15 40 43 51
VSBY 4 3 3 7 7 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 50 0 0 5
RAIN SHWRS NM SC SC
TSTMS
MIX HGT <1 1 1 2 3 5 1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR W W NW NW W W NW NW NW NW NW NW SW SW S
T WIND SPD 4 9 6 9 10 13 13 10 5 4 4 8 8 11 8
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 4 11 22 40 54 6 5 3 2 4 43 66 94 4
MAX LVORI 6 6 5 3 1 1 2 3 3 5 3 1 1 1 2
STABILITY F F B B B C G G G G A A A A G
CEILING 2300 700 None None None None None None
STA PRES 27.10 27.10 27.10 27.18 27.20 27.23 27.13
Date 05/09Sun 05/10/26Mon 05/11/26Tue 05/12/26Wed 05/13/26
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 72 48 77 49 65 38 68 46 74
TEMP 67 64 50 52 72 68 56 51 61 56 41 42 63 60 49 50 69 65
DEWPT 46 48 46 48 49 52 52 47 40 36 34 34 36 39 41 42 45 47
RH 47 56 86 86 44 57 86 86 46 47 76 73 36 46 74 74 42 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW SC B2 B2 B2 B1 SC FW FW FW FW SC SC SC B1
POP 12HR 10 5 50 70 20 0 10 20 30
RAIN SHWRS IS SC NM NM IS IS IS IS SC
TSTMS IS IS SC
$$
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