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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Mar 22 2026
NCZ003-222000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Sun Mar 22 2026
Date Sun 03/22/26 Mon 03/23/26 Tue 03/24/26
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 84 58 68 35 58
TEMP 72 82 83 74 68 66 65 62 65 67 63 55 48 43 39 36 47 55 58 52
DEWPT 58 55 53 55 55 55 55 56 52 43 35 30 28 27 27 26 27 26 27 29
MAX/MIN RH 34 81 34 67 30
RH 61 40 36 51 63 68 70 81 63 42 35 38 46 53 62 67 45 32 30 41
WIND DIR W W W W W SW SW NW NW NW N N N N N N E SE SE SE
WIND SPD 2 4 5 2 2 2 4 6 10 10 9 5 3 2 1 1 2 2 3 1
WIND GUST 12 19 21 23 20 20 18 16
CLOUDS CL FW FW FW FW FW B2 B2 B1 SC FW FW SC B1 SC SC SC SC SC FW
CLOUDS(%) 4 16 15 21 8 20 77 77 57 31 24 19 45 53 46 36 46 44 32 14
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 5 0 0
MIX HGT 2 6 7 <1 1 1 1 1 3 4 4 2 2 2 <1 <1 3 3 4 <1
T WIND DIR W W SW SW SW W W NW N N N N N N N E E SE SE SE
T WIND SPD 13 12 16 8 6 8 10 10 18 26 25 21 16 11 8 8 5 3 5 6
DISPERSION VP VP VP VP PR VP VP VP VP
ADI 42 86120 4 3 4 7 16 42 92 92 10 7 5 4 8 20 14 26 3
MAX LVORI 1 1 1 2 3 3 3 3 1 1 1 2 2 3 3 3 2 2 2 2
STABILITY B B B G G G E D D C C F F F F A B B B G
CEILING None None None 0 None None None None None None
STA PRES 28.01 27.93 27.90 27.89 28.00 28.15 28.27 28.35 28.39 28.33
Date Wed 03/25/26Thu 03/26/26Fri 03/27/26Sat 03/28/26
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 37 67 46 76 56 73 37 59
TEMP 40 40 64 61 51 48 72 70 61 59 69 61 45 39 55 51
DEWPT 28 31 38 43 44 45 53 54 52 51 50 40 36 31 30 27
RH 62 70 38 51 77 89 51 57 72 75 51 46 70 73 38 39
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 SC SC SC FW SC B1 B2 B2 B1 SC SC
POP 12HR 5 5 20 20 20 40 50 20
RAIN SHWRS IS IS IS IS IS SC SC SC 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