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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Thu Mar 19 2026
NCZ003-192000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
731 AM EDT Thu Mar 19 2026
Date Thu 03/19/26 Fri 03/20/26 Sat 03/21/26
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 60 37 69 49 76
TEMP 33 46 56 60 53 46 42 40 40 57 66 69 62 54 53 52 52 63 73 75 67
DEWPT 23 30 34 36 37 38 37 36 36 42 43 43 44 44 45 47 48 53 53 51 52
MAX/MIN RH 40 90 39 87 43
RH 66 53 43 41 54 73 82 85 85 57 43 39 52 69 74 83 86 70 49 43 59
WIND DIR N N SW NW N NW NW NW NW S S SW SW SW W W W W W W W
WIND SPD 0 0 2 2 0 1 1 1 1 1 4 4 2 2 2 2 2 2 4 3 1
WIND GUST 14
CLOUDS SC SC B1 SC CL FW CL FW FW SC SC B1 B1 B1 B1 B1 B2 B2 B2 SC FW
CLOUDS(%) 48 40 69 36 5 6 5 7 14 45 45 61 53 55 62 61 71 70 72 34 14
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 20 10
RAIN SHWRS IS IS
MIX HGT <1 2 4 5 <1 <1 <1 <1 <1 2 5 5 1 <1 <1 <1 <1 2 5 5 <1
T WIND DIR W W NW NW S W NW NW NW SW SW SW SW SW W W W NW NW NW NW
T WIND SPD 2 6 9 6 3 2 3 4 4 11 16 19 9 8 8 5 4 17 16 14 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 18 45 37 2 1 2 2 4 30 89 79 4 4 4 3 4 48 65 91 3
MAX LVORI 3 2 1 1 3 3 5 5 5 1 1 1 2 3 4 5 6 3 1 1 3
STABILITY C A B B G G G G A A B C F F F F C C C B G
CEILING None None None None None None 5700 2900 2600 None
STA PRES 28.28 28.23 28.26 28.22 28.20 28.08 28.02 27.95 27.99 27.96
Date Sun 03/22/26Mon 03/23/26Tue 03/24/26Wed 03/25/26
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 51 81 54 71 34 59 35 65
TEMP 56 52 78 70 59 57 67 57 41 35 55 52 40 37 62 58
DEWPT 50 48 52 53 51 51 47 34 27 24 24 27 28 29 38 39
RH 80 86 40 55 75 80 49 42 57 64 30 38 62 72 41 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC B1 B1 FW FW SC SC B1 B1 SC SC
POP 12HR 0 0 20 30 10 5 20 10
RAIN SHWRS IS SC SC 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