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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
832 PM EDT Tue Mar 17 2026
VAZ018-180800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
832 PM EDT Tue Mar 17 2026
Date 03/17/26 Wed 03/18/26 Thu 03/19/26 Fri
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 18 39 30 57 40
TEMP 21 21 21 21 29 36 39 37 33 32 31 32 46 54 57 50 45 43 41 40
DEWPT 9 9 9 8 10 11 14 18 18 20 22 25 30 35 36 35 36 36 36 36
MIN/MAX RH 60 35 75 46 85
RH 59 59 59 56 44 35 35 46 53 61 69 75 53 48 45 56 70 76 82 85
WIND DIR NW NW NW NW S S S SE S SW SW W SW SW SW SW W W W W
WIND SPD 10 6 5 3 4 6 6 5 4 2 1 1 2 3 3 2 2 2 2 2
CLOUDS B1 B2 OV B2 B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 SC SC SC
CLOUDS(%) 56 77 94 79 66 67 74 62 61 64 55 65 69 73 76 72 63 44 50 38
VSBY 10 10 10 10 10 10 10 9 9 10 10 10 10 10 10 10
POP 12HR 10 0 0 5 20
RAIN SHWRS IS IS
SNOWSHWRS
MIX HGT 2 1 1 1 3 4 5 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW NW W N S S S SE S SW S W W SW SW SW
T WIND SPD 16 11 9 4 5 9 11 10 4 3 2 1 8 10 12 11
DISPERSION FR PR PR PR VP VP VP VP VP VP VP
ADI 7 5 4 7 19 46 34 5 2 2 1 1 20 38 46 5
MAX LVORI 2 2 3 3 2 1 1 2 2 3 3 4 2 1 1 3
STABILITY G F F B B B D F F F F C C C C F
CEILING 2500 12900 7900 5400 4800 3900 3000 3800 1400
STA PRES 27.90 27.95 27.98 27.92 27.94 27.89 27.87 27.78
Date 03/20Sat 03/21/26Sun 03/22/26Mon 03/23/26Tue 03/24/26
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 63 44 69 47 75 47 61 34 52
TEMP 61 57 48 46 66 60 51 49 73 67 57 48 59 52 40 35 48 45
DEWPT 43 40 40 42 45 42 42 44 47 46 43 37 31 28 26 23 25 26
RH 51 53 74 86 47 51 71 83 40 47 59 65 34 39 57 61 40 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 SC B1 SC FW SC FW SC SC B1 SC FW SC SC SC B1
POP 12HR 5 10 5 5 10 30 20 20 20
RAIN SHWRS IS SC IS IS IS
SNOWSHWRS IS 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