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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat May 9 2026
VAZ012-100800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 PM EDT Sat May 9 2026
Date 05/09/26 Sun 05/10/26 Mon 05/11/26 Tue
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 77 49 65 35
TEMP 54 50 48 52 68 74 75 67 58 55 52 51 54 59 61 55 46 42 39 43
DEWPT 47 45 44 47 47 44 47 51 50 50 50 51 51 45 42 39 36 34 32 34
MIN/MAX RH 90 33 100 50 92
RH 77 83 86 83 47 34 37 56 75 83 93100 90 60 49 55 68 73 76 70
WIND DIR W W W W W W W W NW NW NW N NW NW NW NW NW NW NW NW
WIND SPD 2 2 2 2 3 3 3 4 3 3 4 4 4 4 5 4 3 2 2 2
CLOUDS FW SC SC FW FW SC SC SC SC B1 OV OV OV B2 B1 SC FW FW FW CL
CLOUDS(%) 20 29 31 20 7 33 29 36 49 61 93 97 89 86 51 50 11 12 12 4
VSBY 10 10 10 10 10 10 10 10 10 7 8 4 6 10 10 10
POP 12HR 5 10 60 70 0
RAIN SHWRS SC NM NM
MIX HGT <1 <1 <1 <1 4 7 6 <1 <1 <1 <1 1 2 3 5 1
T WIND DIR W W W W W W W W W N N NE N N N N
T WIND SPD 4 3 4 4 18 16 17 9 4 3 4 8 16 10 11 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 4 94131132 4 2 2 3 15 38 32 46 6
MAX LVORI 3 5 5 4 1 1 1 3 4 5 6 5 4 1 1 2
STABILITY F E F A A A A F F F E C C C C E
CEILING None None None None None 400 100 None None
STA PRES 27.15 27.19 27.26 27.24 27.28 27.29 27.32 27.30
Date 05/12Wed 05/13/26Thu 05/14/26Fri 05/15/26Sat 05/16/26
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 70 44 67 44 62 41 70 48 77
TEMP 65 59 45 49 65 62 49 46 61 57 45 46 67 64 51 52 75 71
DEWPT 32 36 36 38 46 47 44 42 39 38 39 40 41 44 43 44 47 49
RH 29 42 70 66 50 58 83 86 44 49 79 79 39 48 74 74 37 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL FW FW B1 B2 SC SC SC SC FW FW FW FW SC FW SC SC
POP 12HR 0 5 60 20 5 5 10 5 10
RAIN SHWRS SC NM IS
TSTMS 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