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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Sat Apr 4 2026
VAZ046-042000-
RAWS 441101
37.39N 78.80W Elev. 804 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 83 61 70 43 66
TEMP 64 76 81 82 76 72 69 67 65 66 68 68 61 55 50 45 45 55 62 65 58
DEWPT 60 62 60 59 58 58 60 60 59 62 57 50 42 38 36 33 33 32 32 32 32
MAX/MIN RH 46 93 50 69 28
RH 87 62 49 46 54 61 73 78 81 87 68 52 49 53 58 62 62 41 32 29 37
WIND DIR SW SW SW S S SW SW SW SW SW W W W NW NW NW W W W W W
WIND SPD 8 10 11 12 9 10 13 14 17 13 10 10 8 6 5 5 4 5 6 8 4
WIND GUST 18 21 20 24 26 28 31 26 20 18 17
CLOUDS FW FW FW SC B1 SC B1 B2 OV OV OV B2 B1 SC FW FW FW CL CL FW CL
CLOUDS(%) 8 6 15 28 58 27 60 81 99 99 88 77 64 32 9 8 8 4 5 7 5
VSBY 10 10 10 10 10 10 10 10 10 9 7 10 7 10 10 10 10 10 10 10 10
POP 12HR 0 30 100 5 0
RAIN SHWRS O O SC SC
TSTMS IS
MIX HGT <1 3 6 6 <1 <1 <1 1 1 2 2 4 <1 <1 <1 <1 <1 4 7 8 <1
T WIND DIR SW SW S SW S S S SW SW W W W W NW NW NW NW W W W W
T WIND SPD 12 13 14 21 9 12 11 23 25 16 14 18 9 6 5 5 12 10 16 24 8
DISPERSION PR FR FR GD PR PR PR PR VP
ADI 13 43 68 96 8 8 10 21 38 31 29 50 8 3 3 3 13 52116200 4
MAX LVORI 4 1 1 1 2 3 3 3 3 4 3 1 2 2 3 3 2 1 1 1 2
STABILITY B C C C D E D D D D D D D F F F B B B B F
CEILING None None None 0 0 0 None None None None
STA PRES 29.48 29.38 29.34 29.26 29.27 29.26 29.33 29.37 29.40 29.29
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 43 61 32 60 35 69 45 75
TEMP 48 45 59 54 39 34 57 52 40 38 65 60 51 49 73 68
DEWPT 33 32 22 20 19 18 22 27 30 31 37 40 43 44 48 46
RH 56 60 24 26 44 51 25 38 67 76 35 47 74 83 41 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL CL CL 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