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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
132 PM EDT Fri Mar 13 2026
VAZ046-132000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
132 PM EDT Fri Mar 13 2026
Date Fri 03/13/26 Sat 03/14/26 Sun 03/15/26
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 57 41 64 42 64
TEMP 53 57 55 52 49 45 42 54 61 64 57 50 48 44 43 52 61 64 60
DEWPT 25 28 30 33 34 32 29 28 28 30 32 33 33 34 35 40 46 50 50
MAX/MIN RH 31 60 27 72 57
RH 33 33 38 48 56 60 60 36 28 28 38 52 56 68 73 63 58 60 69
WIND DIR S SW SW SW W W W W W W SE E E E NE E SE SE E
WIND SPD 17 19 16 13 10 8 6 8 5 4 2 3 4 5 5 6 9 9 6
WIND GUST 33 35 31 28 23 19 19 18
CLOUDS FW CL CL CL FW FW SC B1 B1 SC SC SC FW SC B1 B2 B2 B2 OV
CLOUDS(%) 11 3 3 2 17 25 28 53 60 39 32 30 21 45 64 77 80 76 88
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 30
RAIN SHWRS SC SC SC
MIX HGT 4 4 1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 2 3 3 1
T WIND DIR S SW SW SW SW W W NW W SW SE SE SE SE SE SE S SE SE
T WIND SPD 31 37 14 13 9 8 12 9 9 5 2 3 5 6 5 8 11 19 18
DISPERSION GD FR FR PR VP VP VP PR PR
ADI 88108 13 12 6 4 10 26 33 22 1 2 3 5 6 15 28 43 12
MAX LVORI 1 1 2 2 2 3 3 2 1 2 2 2 3 3 3 2 2 1 3
STABILITY D D D D E F C B C C F G F E D D D D E
CEILING None None None None None None None 2000 1900
STA PRES 29.20 29.22 29.32 29.47 29.46 29.51 29.50 29.51 29.39
Date Mon 03/16/26Tue 03/17/26Wed 03/18/26Thu 03/19/26
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 57 69 32 44 24 48 32 58
TEMP 59 61 68 57 41 33 42 36 29 26 44 41 35 34 55 51
DEWPT 55 59 59 43 24 14 10 6 9 11 11 19 22 24 30 34
RH 87 93 73 59 50 45 26 28 42 52 26 41 59 66 38 52
WIND SPD <15 15> <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B2 B1 SC FW SC FW FW SC SC SC B1 B1 B1 B2
POP 12HR 80 100 40 5 0 0 5 5
RAIN SHWRS SC O O O 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