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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri Mar 20 2026
NCZ003-202000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Fri Mar 20 2026
Date Fri 03/20/26 Sat 03/21/26 Sun 03/22/26
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 71 51 76 52 83
TEMP 59 68 70 63 57 56 55 54 65 73 75 68 60 57 54 54 68 80 82 74
DEWPT 39 40 41 42 44 46 48 50 54 50 49 51 51 51 51 51 57 56 55 55
MAX/MIN RH 35 91 39 92 39
RH 47 36 35 46 62 69 77 86 68 44 40 54 72 80 90 90 68 44 40 51
WIND DIR S SW SW SW SW W NW NW NW NW W W NW NW NW NW W SW SW SW
WIND SPD 2 5 5 2 2 2 2 1 2 2 2 1 1 1 1 1 2 3 4 2
WIND GUST 16 12 12
CLOUDS FW B1 B2 B1 SC SC B1 B2 B2 B2 B1 FW FW FW FW SC FW FW FW FW
CLOUDS(%) 20 57 71 55 38 48 60 82 84 73 58 25 13 19 17 30 9 14 21 20
VSBY 10 10 10 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 20 10 10 0
RAIN SHWRS IS
MIX HGT 2 5 5 <1 <1 1 1 <1 3 4 5 <1 <1 <1 <1 <1 2 5 6 <1
T WIND DIR SW SW SW SW SW W W W NW NW NW W NW NW NW NW W SW SW SW
T WIND SPD 12 17 20 10 8 9 5 3 16 11 9 1 3 3 3 3 11 13 16 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 30 73 88 5 4 4 3 3 55 51 51 1 2 2 2 3 30 78112 3
MAX LVORI 2 1 1 2 3 3 4 6 1 1 1 2 3 5 6 6 3 1 1 2
STABILITY B C C F G F F C B B B G G G G A B B B G
CEILING None 11200 None 3000 9700 None None None None None
STA PRES 28.19 28.08 28.01 27.96 28.02 28.00 28.05 28.02 28.02 27.94
Date Mon 03/23/26Tue 03/24/26Wed 03/25/26Thu 03/26/26
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 58 74 37 61 41 62 43 71
TEMP 63 59 70 61 44 38 58 54 45 42 60 56 48 45 66 65
DEWPT 53 53 47 35 31 28 29 32 32 34 38 40 40 39 45 49
RH 70 80 44 38 60 67 33 43 60 73 44 55 74 79 47 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 SC FW FW FW SC B1 B1 B1 B1 B1 B2 B1 SC
POP 12HR 10 20 10 5 10 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