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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Mar 18 2026
NCZ006-190800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 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 32 61 41 70 50
TEMP 35 34 33 33 48 57 61 56 50 46 44 42 57 66 69 63 58 54 52 52
DEWPT 20 21 22 24 27 30 33 37 37 38 39 40 44 44 43 44 44 44 45 47
MIN/MAX RH 69 35 92 39 84
RH 54 58 63 69 44 35 35 49 61 73 82 93 62 45 39 50 59 69 77 83
WIND DIR SE S S S SW SW W S S SW W W S SW SW S S SW SW SW
WIND SPD 2 2 3 2 5 4 4 3 3 1 1 1 2 4 4 2 4 5 5 4
CLOUDS SC OV B1 SC SC SC SC SC SC B1 FW FW SC SC B1 B2 B1 B1 B1 SC
CLOUDS(%) 40 88 65 45 47 31 43 41 33 54 19 17 34 43 60 81 66 67 61 45
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 5 20
RAIN SHWRS IS IS
MIX HGT <1 <1 <1 <1 2 4 5 <1 <1 <1 <1 <1 2 5 5 <1
T WIND DIR S S S S SW W W SW W NW N N S SW SW S
T WIND SPD 3 3 4 4 8 6 6 1 1 2 2 2 2 10 16 9
DISPERSION VP VP VP VP VP VP VP VP VP PR PR
ADI 2 2 2 4 20 32 37 1 1 1 1 2 5 60 95 4
MAX LVORI 2 3 3 3 2 1 1 2 3 3 5 6 3 1 1 2
STABILITY F F F C C B B F F F G A B B B F
CEILING None 6000 None None None None None 19000 16800
STA PRES 29.65 29.60 29.59 29.50 29.53 29.52 29.51 29.37
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 77 53 83 55 70 36 58 37 64
TEMP 74 68 58 55 80 75 64 57 66 58 43 38 54 52 43 41 62 58
DEWPT 50 51 50 51 54 52 51 49 39 32 28 27 29 32 32 34 38 37
RH 43 54 75 86 41 45 63 75 37 37 55 64 38 46 65 76 41 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 SC B1 B1 SC
POP 12HR 0 0 5 20 30 30 10 30 20
RAIN SHWRS IS SC SC SC IS SC IS
TSTMS 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