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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Thu Mar 12 2026
VAZ046-130800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 AM EDT Thu Mar 12 2026
Date 03/11/26 Thu 03/12/26 Fri 03/13/26 Sat
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 51 55 31 58 42
TEMP 68 55 46 37 43 42 37 33 31 32 45 53 57 54 51 49 46 43
DEWPT 56 48 41 35 29 22 21 22 22 23 26 28 30 30 33 33 33 32
MIN/MAX RH 83 44 68 36 66
RH 65 77 83 92 57 44 52 63 69 69 47 38 35 40 50 54 60 65
WIND DIR W NW N N NW NW W W SW SW S S SW SW SW SW W W
WIND SPD 12 13 11 9 8 4 2 2 3 5 14 18 20 16 12 9 5 4
WIND GUST 25 26 23 27 34 35 29 26 21 16
CLOUDS B2 OV OV OV FW FW CL CL SC SC FW FW FW CL FW FW SC B1
CLOUDS(%) 85 92 99 91 24 9 2 5 34 40 15 21 15 5 10 21 42 60
VSBY 10 10 4 1 5 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 100 0 0 0
RAIN C L D C
SNOW C
MIX HGT 1 2 2 2 3 <1 <1 <1 <1 <1 3 4 4 1 1 <1 <1 <1
T WIND DIR W NW N N NW NW NW SW SW S SW SW SW SW SW SW SW SW
T WIND SPD 9 23 24 18 17 9 3 3 3 4 24 27 32 13 12 10 6 4
DISPERSION FR VP VP VP VP GD FR PR PR
ADI 10 41 51 32 66 4 2 2 2 5 61 74 94 15 11 7 5 5
MAX LVORI 3 3 4 4 1 2 2 3 3 3 1 1 1 2 2 2 3 3
STABILITY D D D D B F G G G B D D D D D E E B
CEILING 3400 1100 None None None None None None None
STA PRES 29.05 29.27 29.36 29.48 29.48 29.43 29.26 29.27 29.33
Date 03/14Sun 03/15/26Mon 03/16/26Tue 03/17/26Wed 03/18/26
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 65 41 65 59 65 30 44 24 49
TEMP 61 55 47 43 61 61 60 61 63 49 37 31 41 37 29 26 45 41
DEWPT 28 34 34 35 46 48 54 57 53 30 19 14 10 10 11 11 14 20
RH 28 45 60 73 58 62 81 87 70 48 48 49 27 32 46 52 28 42
WIND SPD <15 <15 <15 <15 15> <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 B1 B1 B1 OV B2 B2 SC SC FW SC SC FW SC SC
POP 12HR 0 5 20 60 80 20 10 5 5
RAIN SHWRS IS SC NM O O IS
$$
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