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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
222 PM EDT Wed Mar 18 2026
NCZ001-190800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
222 PM EDT Wed Mar 18 2026
Date 03/18/26 Thu 03/19/26 Fri 03/20/26 Sat
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 27 49 37 57 46
TEMP 35 31 29 30 30 32 38 46 48 44 41 40 38 40 47 53 56 51 50 49 49 50
DEWPT 17 19 19 20 22 25 29 33 35 36 35 36 36 36 39 40 41 42 42 43 45 46
MIN/MAX RH 77 60 94 56 88
RH 47 61 66 66 72 75 70 60 60 73 79 85 92 85 74 61 57 71 74 80 86 86
WIND DIR SW S SW W W W W W W W W W W W SW SW SW SW W W W W
WIND SPD 8 10 9 6 8 10 9 6 8 8 8 9 8 8 9 9 11 12 13 16 18 17
CLOUDS SC SC SC B1 B1 B1 B2 B2 B1 B1 B1 SC SC SC B1 B1 B2 B1 B1 B1 B2 B2
CLOUDS(%) 32 33 48 60 64 65 78 70 61 66 57 38 30 40 56 68 70 68 55 69 71 86
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 5 5 10
MIX HGT 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 4 5 <1
T WIND DIR SW S S SW W W W W NW NW NW NW NW NW SW SW W S
T WIND SPD 9 9 6 3 6 9 19 12 8 4 3 3 3 2 10 14 17 9
DISPERSION FR PR PR PR PR PR PR PR FR FR GD GD
ADI 35 6 6 2 6 10 33 28 23 4 3 2 2 2 23 58 53 8
MAX LVORI 1 3 3 3 3 3 3 2 2 3 4 6 6 6 3 1 1 3
STABILITY B E D E D D D D C D D E E B C C D D
CEILING None None 10000 300 5600 None None 20600 15100 10600
STA PRES 26.79 26.79 26.77 26.79 26.75 26.79 26.76 26.75 26.65
Date 03/21Sun 03/22/26Mon 03/23/26Tue 03/24/26Wed 03/25/26
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 60 50 69 49 52 31 49 34 52
TEMP 57 55 51 52 65 62 56 52 50 45 36 33 45 43 38 38 50 48
DEWPT 47 46 46 46 47 49 49 46 37 31 25 24 25 28 30 31 35 35
RH 69 72 83 80 52 62 77 80 61 58 64 69 45 55 73 76 56 60
WIND SPD 15> <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 SC FW SC SC SC SC B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC
POP 12HR 5 0 5 20 40 20 10 20 20
RAIN SHWRS IS SC SC 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