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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Wed Apr 29 2026
NCZ003-292000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
131 PM EDT Wed Apr 29 2026
Date Wed 04/29/26 Thu 04/30/26 Fri 05/01/26
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 75 50 69 40 69
TEMP 66 73 70 61 56 53 53 61 66 67 59 50 45 41 44 57 65 68 63
DEWPT 63 62 60 55 50 48 47 45 41 38 36 34 34 33 34 37 37 39 41
MAX/MIN RH 65 86 35 73 34
RH 90 68 71 81 80 83 80 56 40 34 42 54 65 73 68 47 35 34 44
WIND DIR S SW W NW NW NW NW NW NW NW NW N N N N S S SW SW
WIND SPD 5 6 5 4 3 3 4 6 8 6 4 3 2 1 1 2 4 4 2
WIND GUST 17 16 16 13 16 17 17
CLOUDS B2 B2 B1 B1 B1 B2 B2 FW FW FW FW SC B1 B1 B1 SC B1 B1 B2
CLOUDS(%) 83 83 57 58 64 81 71 18 21 10 9 33 57 63 53 43 52 63 82
VSBY 9 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 20 0 0 5
RAIN SHWRS SC NM IS
TSTMS SC SC
MIX HGT 2 4 <1 <1 <1 1 2 4 6 7 <1 <1 <1 <1 1 4 7 7 <1
T WIND DIR S SW W NW NW NW NW NW NW NW NW N N N N S S SW SW
T WIND SPD 6 10 9 13 12 14 16 17 12 13 17 13 13 9 4 5 9 10 10
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 20 37 6 9 6 7 43 89 89100 8 6 6 4 8 30 67 84 5
MAX LVORI 4 3 3 4 4 4 3 1 1 1 2 3 3 3 3 2 1 1 2
STABILITY C C E E F F C B B B F G F F A A B A F
CEILING 1500 3600 8900 None None None 14500 None 17700
STA PRES 27.88 27.92 27.93 27.97 27.96 28.05 28.08 28.10 28.03
Date Sat 05/02/26Sun 05/03/26Mon 05/04/26Tue 05/05/26
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 44 60 36 66 38 75 47 77
TEMP 50 45 57 56 41 41 62 59 41 44 70 67 52 52 75 69
DEWPT 41 41 44 37 32 31 31 34 32 34 43 47 46 47 48 49
RH 71 86 62 49 70 67 31 39 70 68 38 49 80 83 38 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC FW FW FW CL CL FW SC SC FW FW SC
POP 12HR 40 50 10 0 0 20 20 20
RAIN SHWRS SC SC SC IS IS 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