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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
433 AM EDT Thu Apr 9 2026
VAZ024-092000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
433 AM EDT Thu Apr 9 2026
Date Thu 04/09/26 Fri 04/10/26 Sat 04/11/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 66 40 80 51 80
TEMP 33 34 52 60 65 58 51 47 44 42 64 77 80 71 60 54 51 53 69 77 79 70
DEWPT 27 29 28 31 32 31 30 29 29 33 38 42 42 44 43 42 42 44 51 50 48 48
MAX/MIN RH 29 71 25 74 34
RH 78 82 39 33 29 36 44 49 55 70 38 29 26 38 53 64 71 71 53 39 34 45
WIND DIR N N S SE SE SE E SW NW NW SW SW SW S SW W W NW NW NW N E
WIND SPD 0 0 1 3 3 4 3 2 2 1 2 4 4 2 2 2 2 2 2 3 2 2
CLOUDS SC SC FW SC FW CL CL CL CL FW CL CL CL FW FW FW SC B1 SC SC SC FW
CLOUDS(%) 48 31 20 29 16 5 3 5 3 7 4 4 3 7 11 18 37 56 31 40 35 15
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 20
RAIN SHWRS IS IS
MIX HGT <1 <1 3 4 4 <1 <1 <1 <1 <1 2 5 7 <1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR E SE S S S SE SE W NW NW W SW SW S SW W W NW NW NW SW SE
T WIND SPD 2 2 4 4 4 3 3 1 2 2 5 8 10 5 4 4 4 3 12 4 1 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 3 15 21 21 2 2 1 1 2 16 49 83 3 2 2 2 4 68 37 9 3
MAX LVORI 4 5 2 2 2 2 2 2 3 3 2 1 1 2 2 3 3 3 1 1 2 2
STABILITY F A A A A F G G G A A A A G G G G B A A A G
CEILING None None None None None None None None None None
STA PRES 28.95 28.86 28.86 28.83 28.82 28.72 28.71 28.72 28.79 28.77
Date Sun 04/12/26Mon 04/13/26Tue 04/14/26Wed 04/15/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 51 79 58 84 60 90 62 92
TEMP 55 53 75 73 61 59 82 77 64 61 88 81 68 64 90 82
DEWPT 45 46 51 51 50 50 50 49 51 52 56 55 53 55 55 53
RH 69 77 43 46 67 72 33 37 63 72 34 41 59 73 31 37
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC FW SC B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 5 0 0 5 0 5 0 10
$$
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