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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
304 AM EDT Sun Apr 12 2026
NCZ005-122000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
304 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 81 60 83 60 89
TEMP 55 55 65 76 81 73 68 66 63 63 74 81 82 76 69 66 63 63 78 86 88 80
DEWPT 50 50 51 53 51 52 53 55 55 55 54 51 49 50 50 50 50 51 52 51 50 51
MAX/MIN RH 36 78 32 69 27
RH 83 83 60 45 35 48 59 68 75 75 50 35 32 40 51 56 62 65 40 30 27 36
WIND DIR E E E S S S S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW
WIND SPD 5 5 5 5 8 4 9 9 8 9 12 13 12 8 6 5 5 5 6 8 9 5
WIND GUST 19 23
CLOUDS FW SC SC SC SC FW FW B1 B1 B1 SC B1 B1 B1 SC FW SC SC FW SC SC SC
CLOUDS(%) 15 32 39 34 39 23 23 67 54 55 44 63 57 61 41 23 27 34 23 33 34 33
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 5 0 5 5
MIX HGT <1 <1 2 4 6 <1 <1 <1 <1 1 3 6 6 <1 <1 <1 <1 <1 3 7 7 <1
T WIND DIR E E SE SE S NE S S S SW SW SW SW SW SW SW SW SW W SW SW SW
T WIND SPD 6 11 9 6 6 2 6 9 8 13 19 24 19 8 8 6 5 5 4 10 13 5
DISPERSION PR VP PR PR PR PR PR PR PR PR
ADI 3 12 27 32 49 1 5 8 7 22 61106 89 7 5 3 3 6 17 76106 3
MAX LVORI 5 4 2 1 1 2 3 3 4 3 1 1 1 2 2 2 3 3 2 1 1 2
STABILITY F A A A B F E D D B C C C D E F F A B B B F
CEILING None None None None None 12400 None None None None
STA PRES 29.64 29.58 29.54 29.54 29.54 29.47 29.45 29.44 29.44 29.35
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 62 92 65 91 66 89 64 93
TEMP 70 65 90 84 71 66 88 84 72 67 87 83 69 66 91 85
DEWPT 50 51 51 49 50 52 50 49 51 55 53 50 53 55 54 53
RH 49 60 26 30 47 61 27 30 48 65 31 32 57 68 29 33
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC SC SC SC SC SC SC SC FW SC SC SC SC
POP 12HR 0 0 0 0 5 5 0 10
$$
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