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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
832 PM EDT Tue Mar 17 2026
NCZ005-180800-
RAWS 310540
36.38N 79.70W Elev. 858 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 28 44 30 59 41
TEMP 31 29 29 28 34 41 44 40 34 33 31 31 46 56 58 53 48 45 43 42
DEWPT 12 12 14 13 13 12 13 17 18 19 20 22 26 31 33 34 35 36 36 37
MIN/MAX RH 53 27 69 36 85
RH 45 48 53 53 41 30 28 39 51 56 63 69 45 38 39 48 60 70 76 82
WIND DIR N N N E E S S S S S SW SW SW SW SW S SW SW SW W
WIND SPD 4 4 4 3 3 3 4 3 3 2 2 2 3 5 5 2 3 3 3 2
CLOUDS FW SC OV B1 B1 B1 B2 B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 SC
CLOUDS(%) 7 48 95 65 67 51 73 59 41 45 35 43 64 65 68 69 63 58 53 31
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 10
MIX HGT <1 <1 2 2 4 5 5 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW NW N NE E S S SE SE S S S SW SW SW SW
T WIND SPD 14 12 13 8 3 5 8 2 3 3 4 3 10 8 12 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 7 6 6 20 15 32 48 1 2 2 2 4 24 34 49 4
MAX LVORI 2 2 2 2 2 1 1 2 2 3 3 3 2 1 1 2
STABILITY F F F B B B B F G F G B C B C F
CEILING None 16400 8900 7700 None None 5800 14500 8300
STA PRES 29.50 29.57 29.62 29.54 29.54 29.50 29.47 29.35
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 66 45 72 49 77 52 70 38 53
TEMP 64 61 51 47 69 65 55 51 75 71 62 53 67 60 47 38 50 48
DEWPT 42 42 43 43 46 44 45 45 49 48 48 44 38 33 30 27 26 29
RH 45 49 74 86 44 46 69 80 40 44 60 71 34 36 51 64 39 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 SC SC B1 SC SC SC FW SC B1 SC SC SC SC SC B1
POP 12HR 5 5 0 0 5 20 20 20 20
RAIN SHWRS IS IS IS 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