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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
503 PM EDT Wed Apr 1 2026
NCZ003-020800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
503 PM EDT Wed Apr 1 2026
Date 04/01/26 Thu 04/02/26 Fri 04/03/26 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 56 79 55 80 57
TEMP 68 65 62 58 58 69 78 79 74 66 61 58 56 68 76 79 73 65 60 57 59
DEWPT 60 58 58 56 57 62 62 60 58 55 53 54 55 59 58 56 56 55 56 56 57
MIN/MAX RH 99 52 96 46 96
RH 76 78 87 93 96 78 58 52 57 68 75 86 96 73 54 45 55 70 87 96 93
WIND DIR NW S N N N S S S S S S S S S S S S SW SW S SW
WIND SPD 5 1 0 0 0 2 5 6 3 2 2 2 1 3 5 5 2 1 1 1 1
WIND GUST 13 12
CLOUDS B1 B1 SC SC SC SC SC SC SC FW SC SC B1 B1 SC SC B1 SC B1 B1 B1
CLOUDS(%) 65 57 47 32 46 46 43 28 28 24 31 49 68 54 42 45 58 48 58 54 65
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 20 5 20 5
RAIN SHWRS SC IS IS IS IS
TSTMS SC IS
Obvis PF PF
MIX HGT <1 <1 <1 <1 <1 2 5 5 1 1 1 1 1 3 6 6 1
T WIND DIR S SW SW SW S SW SW S S S S SW SW SW SW SW SW
T WIND SPD 13 8 3 2 1 10 16 17 13 12 14 12 13 12 10 11 10
DISPERSION PR VP VP VP VP VP VP VP VP VP VP VP
ADI 6 4 2 1 1 30 92108 6 6 7 6 21 51 65 78 5
MAX LVORI 3 4 6 7 8 3 1 1 3 3 4 5 5 3 1 1 2
STABILITY F F F G A B B B G G G F C B B B F
CEILING None None None None None None None None None
STA PRES 28.26 28.29 28.35 28.33 28.35 28.37 28.40 28.34
Date 04/04Sun 04/05/26Mon 04/06/26Tue 04/07/26Wed 04/08/26
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 80 57 71 39 65 39 64 34 60
TEMP 78 74 64 59 67 62 46 40 63 58 44 41 61 56 40 36 59 54
DEWPT 59 57 57 57 54 44 36 31 31 31 32 33 33 30 28 27 27 28
RH 52 55 78 93 63 52 68 70 30 36 62 73 35 37 62 69 29 36
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 OV B2 SC SC FW FW FW FW FW SC FW FW FW FW
POP 12HR 40 50 80 20 0 0 5 5 5
RAIN SHWRS SC SC SC O NM IS
TSTMS 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