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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
432 AM EDT Sat Mar 21 2026
NCZ003-212000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
432 AM EDT Sat Mar 21 2026
Date Sat 03/21/26 Sun 03/22/26 Mon 03/23/26
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 74 53 83 60 70
TEMP 54 54 65 73 74 69 62 57 54 54 69 81 83 77 69 66 63 61 65 68 66 57
DEWPT 45 48 52 48 47 49 51 54 54 54 56 55 52 54 53 54 53 53 48 40 33 30
MAX/MIN RH 37 99 34 76 30
RH 71 80 63 41 38 49 67 90100100 63 41 34 45 57 65 70 75 54 36 29 35
WIND DIR W W NW NW W W W W W W SW SW SW SW SW W W NW NW N N N
WIND SPD 5 4 4 4 3 2 2 2 2 2 4 6 9 6 8 8 9 9 10 10 11 10
WIND GUST 20
CLOUDS B2 B2 B2 B2 B1 FW SC FW SC SC FW FW SC SC FW B1 SC B1 SC FW FW FW
CLOUDS(%) 75 84 87 74 65 23 27 24 27 41 18 21 33 27 24 53 47 63 43 25 16 25
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 10 0 10 10
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 <1 2 5 7 <1 <1 <1 <1 1 3 4 4 1
T WIND DIR SW W NW NW SW S N W SW SW W SW SW SW SW SW W N NW N N N
T WIND SPD 5 3 8 5 3 3 0 2 2 1 5 17 20 8 9 9 10 23 26 20 19 14
DISPERSION PR VP VP VP VP PR PR PR PR FR
ADI 4 4 17 16 14 2 0 1 1 1 13 93 96 4 6 8 9 33 86 78 75 10
MAX LVORI 3 4 2 2 2 2 4 5 7 7 2 1 1 2 3 3 3 3 1 1 1 2
STABILITY E D D D C G G G G B B B C F E D D D C C C E
CEILING 0 None None None None None None None None None
STA PRES 28.88 28.83 28.84 28.81 28.81 28.71 28.66 28.66 28.92 29.05
Date Tue 03/24/26Wed 03/25/26Thu 03/26/26Fri 03/27/26
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 39 58 42 61 45 69 54 74
TEMP 45 39 55 53 46 43 59 58 50 47 66 67 59 55 71 66
DEWPT 28 28 26 27 29 33 39 40 41 42 48 51 52 50 48 43
RH 51 64 32 36 51 67 47 51 71 83 52 56 78 83 44 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 B1 B1 B2 B1 SC B1 B1 B1 B1 SC B1
POP 12HR 5 5 20 30 20 20 20 30
RAIN SHWRS IS SC IS IS IS IS IS 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