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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Apr 29 2026
NCZ001-292000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 AM 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 63 44 54 39 56
TEMP 53 58 60 55 51 47 46 44 45 51 53 47 42 40 41 43 47 53 55 50
DEWPT 53 57 55 51 47 43 43 40 36 33 31 30 30 30 30 30 29 32 33 34
MAX/MIN RH 80 90 44 67 43
RH 100 96 84 86 86 86 89 86 70 50 43 51 62 67 65 60 49 44 43 54
WIND DIR SW W W NW NW NW NW NW NW NW NW NW NW NW NW W W W W W
WIND SPD 13 16 20 24 25 24 23 25 20 17 16 16 13 13 11 10 11 11 11 12
CLOUDS B2 B2 B2 B1 B2 B1 B1 B1 FW FW FW SC SC B1 B2 B1 SC B1 B1 B2
CLOUDS(%) 72 72 74 69 70 62 66 52 17 19 16 32 37 68 76 68 40 52 64 77
VSBY 9 8 10 9 9 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 30 5 5 20
RAIN SHWRS SC SC NM SC IS IS IS
TSTMS IS SC SC
MIX HGT 1 2 2 1 1 <1 <1 1 3 4 4 1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR S SW W NW NW NW NW NW NW W NW NW NW N N N W W W W
T WIND SPD 11 11 33 33 31 29 28 23 18 16 18 18 18 9 8 2 6 9 12 10
DISPERSION GD GD GD GD GD FR FR FR FR
ADI 16 22 67 37 28 27 26 35 56 61 71 21 16 8 7 2 26 32 58 9
MAX LVORI 5 5 3 4 4 4 4 4 3 1 1 2 2 3 3 3 2 1 1 2
STABILITY D D D D D D D D C C C D D D D C C D C D
CEILING 300 200 200 200 None None None 10400 None 6900
STA PRES 26.50 26.46 26.51 26.52 26.57 26.56 26.61 26.61 26.60 26.55
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 41 48 32 53 38 57 44 62
TEMP 45 42 44 44 37 37 49 47 40 43 55 52 48 48 59 56
DEWPT 36 38 35 30 27 27 27 29 31 32 37 39 41 41 40 41
RH 70 86 70 57 67 67 42 49 70 65 51 61 77 77 49 57
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC FW FW FW FW FW FW SC SC SC SC B1
POP 12HR 40 40 5 0 5 20 20 30
RAIN SHWRS IS SC SC SC IS IS IS SC
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