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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
432 AM EDT Sun Apr 12 2026
NCZ001-122000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
432 AM EDT Sun Apr 12 2026
Date Sun 04/12/26 Mon 04/13/26 Tue 04/14/26
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 68 52 70 53 73
TEMP 50 50 58 66 66 61 58 57 56 56 62 67 67 62 57 56 55 57 64 70 71 65
DEWPT 43 44 44 44 43 42 42 42 43 42 42 41 42 43 43 43 44 44 47 49 49 49
MAX/MIN RH 43 61 38 64 45
RH 77 80 59 45 43 49 55 57 62 59 48 39 40 50 59 62 66 62 54 47 46 56
WIND DIR SE SE S S S S S SW SW SW W W W W W W W W W W W W
WIND SPD 5 6 9 12 12 12 11 12 12 11 13 12 11 9 9 10 12 13 14 11 11 10
WIND GUST 25
CLOUDS CL FW SC SC SC SC SC B1 B1 SC B1 B1 B1 B1 FW FW SC SC SC SC SC SC
CLOUDS(%) 5 19 26 35 28 42 39 54 53 50 65 63 62 60 22 19 27 42 44 49 42 43
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 5 5 10
MIX HGT <1 <1 2 5 6 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR E E S SW S S S S S SW W W W S SW W W W W SW SW S
T WIND SPD 2 3 11 17 19 8 6 10 9 5 19 19 14 5 4 5 6 11 11 11 10 8
DISPERSION PR FR FR FR FR PR PR FR FR FR
ADI 1 4 28 74 87 7 5 9 8 4 66 61 44 5 3 4 6 9 37 49 40 7
MAX LVORI 4 4 2 1 1 2 2 2 3 3 1 1 1 2 3 3 3 3 1 1 1 3
STABILITY F B B C C D E D D C C D D D E E D C C C C D
CEILING None None None None 8300 5200 None None None None
STA PRES 26.99 26.96 26.95 26.92 26.93 26.91 26.87 26.85 26.86 26.80
Date Wed 04/15/26Thu 04/16/26Fri 04/17/26Sat 04/18/26
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 55 76 56 74 55 74 56 76
TEMP 58 59 73 68 58 58 72 67 59 58 70 67 59 59 74 70
DEWPT 47 45 46 48 47 47 47 48 48 52 49 49 48 49 50 50
RH 67 60 38 49 67 67 41 50 67 80 47 52 67 69 43 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC B1 SC SC SC B1 SC SC SC SC SC B1
POP 12HR 0 0 0 10 20 10 5 20
RAIN SHWRS 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