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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Sat Apr 4 2026
NCZ001-042000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
631 AM EDT Sat Apr 4 2026
Date Sat 04/04/26 Sun 04/05/26 Mon 04/06/26
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 50 55 35 51
TEMP 57 62 65 62 59 59 58 58 55 50 53 51 47 44 40 37 36 42 49 50 46
DEWPT 52 54 55 56 55 55 55 55 55 49 47 41 37 33 32 30 29 26 27 28 29
MAX/MIN RH 70 100 66 79 41
RH 83 75 70 81 87 87 90 90100 96 80 68 68 65 73 75 75 53 42 42 51
WIND DIR SW S S S S SW SW SW SW W W W NW NW NW NW NW NW NW W W
WIND SPD 8 11 14 14 16 16 18 18 17 14 13 18 24 26 26 21 19 17 13 14 14
CLOUDS SC SC B1 B2 B1 B1 B1 B2 OV OV B2 B1 SC SC FW FW FW FW FW FW FW
CLOUDS(%) 33 43 63 82 67 52 68 87 98 98 87 56 50 32 23 18 18 7 11 12 12
VSBY 10 10 10 10 10 10 10 6 4 4 10 10 7 10 10 10 10 10 10 10 10
POP 12HR 30 90 100 0 0
RAIN SHWRS IS IS SC SC O O SC SC
TSTMS IS IS SC IS
MIX HGT <1 3 3 2 <1 <1 <1 <1 1 1 2 2 1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR SW S S S S SW SW S SW NW W W NW NW NW NW NW NW NW W W
T WIND SPD 9 9 17 18 12 14 11 11 10 21 26 19 17 19 24 25 21 19 24 24 12
DISPERSION GD GD GD GD GD GD GD GD GD
ADI 10 28 42 37 11 13 10 10 14 30 49 41 19 18 22 23 25 43 68 72 11
MAX LVORI 4 3 1 3 5 4 5 5 5 4 3 1 3 3 3 3 3 1 1 1 2
STABILITY B C D D D D D D D D D D D D D D D D D D D
CEILING None 0 0 0 0 0 None None None None
STA PRES 26.89 26.81 26.77 26.69 26.71 26.69 26.71 26.70 26.74 26.70
Date Tue 04/07/26Wed 04/08/26Thu 04/09/26Fri 04/10/26
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 37 48 29 50 33 56 41 62
TEMP 41 38 46 42 32 31 46 43 36 35 53 49 44 45 59 56
DEWPT 30 28 21 19 17 16 22 22 24 27 32 34 37 40 41 42
RH 65 67 37 39 53 53 38 43 61 72 44 56 76 82 51 59
WIND SPD 15> <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW CL FW FW FW FW SC SC FW FW FW FW FW
POP 12HR 0 0 0 0 0 5 5 5
$$
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