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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 PM EDT Wed Apr 29 2026
NCZ001-300800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
1001 PM EDT Wed Apr 29 2026
Date 04/29/26 Thu 04/30/26 Fri 05/01/26 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 44 52 39 57 40
TEMP 51 48 47 46 46 51 51 46 42 40 39 42 49 56 55 50 47 45 43 41
DEWPT 49 45 44 42 38 35 31 30 30 29 30 29 29 31 32 33 35 36 38 39
MIN/MAX RH 93 47 69 38 92
RH 93 89 89 86 73 54 46 53 62 64 70 60 46 38 41 52 63 70 82 92
WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW S W W W NW NW NW N
WIND SPD 20 21 21 21 19 18 18 17 13 11 9 6 9 10 11 11 10 10 10 10
WIND GUST 36 34 32 32
CLOUDS B2 B2 B2 B2 SC FW FW FW SC B1 B2 B1 SC SC B1 B2 B2 OV B2 B2
CLOUDS(%) 80 80 87 73 34 21 20 8 39 66 74 59 41 49 63 76 85 89 86 84
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 0 0 5 50
RAIN SHWRS SC SC SC
TSTMS
MIX HGT 1 <1 <1 1 2 4 4 2 <1 <1 <1 <1 3 6 6 <1
T WIND DIR NW NW NW NW NW NW NW NW NW N N NE S SW W W
T WIND SPD 26 23 20 21 19 14 16 20 21 16 8 3 5 8 11 9
DISPERSION GD GD GD GD FR FR PR FR FR FR FR
ADI 24 21 19 31 56 56 63 23 20 14 7 4 24 57 38 8
MAX LVORI 4 4 4 4 3 1 1 2 2 2 3 3 2 1 1 2
STABILITY D D D D C C C D D D D B B B D D
CEILING 200 None None None 10900 None 6400 16500
STA PRES 26.51 26.53 26.55 26.61 26.62 26.63 26.58
Date 05/02Sun 05/03/26Mon 05/04/26Tue 05/05/26Wed 05/06/26
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 47 32 53 38 62 47 63 47 65
TEMP 43 44 37 36 49 47 39 43 58 56 50 50 60 57 50 51 61 60
DEWPT 37 30 27 27 26 28 29 31 38 42 43 44 43 44 43 44 47 47
RH 79 57 67 69 40 47 67 62 47 59 77 80 53 62 77 77 60 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 SC FW FW FW CL CL CL SC SC SC SC SC SC B1 SC B1
POP 12HR 50 10 0 0 20 20 20 10 30
RAIN SHWRS SC SC IS IS IS IS SC
TSTMS IS 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
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