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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Apr 12 2026
NCZ003-122000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
801 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 79 57 81 57 87
TEMP 63 74 78 72 67 63 60 59 70 78 80 74 67 62 58 59 74 83 84 78
DEWPT 52 52 51 51 50 52 51 52 53 51 50 50 50 50 49 50 51 51 52 52
MAX/MIN RH 38 82 35 74 32
RH 67 46 39 48 54 67 72 78 55 39 35 43 54 65 72 72 44 33 33 40
WIND DIR E SE S S S S SW SW SW SW SW SW SW SW SW SW SW SW SW SW
WIND SPD 5 5 6 4 5 8 6 6 10 11 11 8 6 4 3 3 5 6 8 6
CLOUDS SC SC SC FW SC B2 SC B1 B1 B1 B1 B1 SC FW SC SC SC SC SC SC
CLOUDS(%) 36 32 30 24 34 72 40 54 54 62 64 56 32 18 26 40 31 36 41 30
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 5
MIX HGT 2 4 6 <1 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 3 7 8 <1
T WIND DIR E E SE NE N S SW SW SW SW SW SW SW SW SW SW W SW SW SW
T WIND SPD 8 4 4 2 2 4 6 6 16 17 13 8 10 5 2 1 3 10 12 8
DISPERSION VP PR PR PR PR PR VP VP PR
ADI 21 21 32 1 1 4 3 7 48 75 47 7 5 3 1 1 12 74101 4
MAX LVORI 3 2 1 2 3 3 3 4 1 1 1 2 2 3 3 3 2 1 1 2
STABILITY A A B F F D F B C C D D F F G A A B B F
CEILING None None None None None 6200 None None None None
STA PRES 29.31 29.25 29.22 29.21 29.22 29.15 29.13 29.11 29.12 29.04
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 60 90 62 89 63 88 62 90
TEMP 65 62 87 81 67 63 86 81 68 64 86 81 66 64 88 82
DEWPT 51 51 50 50 51 51 50 49 51 55 52 51 52 53 54 53
RH 60 67 28 34 56 65 29 33 54 73 31 35 61 67 31 37
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC SC SC SC SC SC SC FW FW SC SC SC B1
POP 12HR 0 0 0 5 10 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