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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
337 AM EDT Wed Apr 29 2026
NCZ003-292000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
337 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 74 51 68 43 67
TEMP 57 56 59 66 73 70 61 56 52 53 60 65 67 61 52 47 44 46 57 64 66 62
DEWPT 57 56 59 63 62 59 54 50 47 45 43 40 37 36 35 35 35 35 37 37 39 41
MAX/MIN RH 66 83 33 71 36
RH 100100100 90 68 68 78 80 83 74 53 40 33 39 52 63 70 65 47 37 37 46
WIND DIR S S S SW SW W NW NW NW NW NW NW NW NW N N N N W SW SW SW
WIND SPD 4 5 6 9 9 10 10 9 8 8 8 8 9 8 6 5 4 3 4 5 6 6
CLOUDS OV OV OV B2 B2 B1 SC B1 B1 SC FW FW FW FW SC B1 B1 B1 B1 SC B1 B2
CLOUDS(%) 96 97 96 85 78 53 47 59 66 38 17 13 14 15 30 52 64 68 55 47 65 82
VSBY 6 6 5 6 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 5 5 5 10
RAIN SHWRS NM SC SC NM IS
TSTMS IS IS SC SC
MIX HGT <1 <1 1 2 3 <1 <1 <1 <1 2 5 6 7 <1 <1 <1 <1 1 4 6 6 <1
T WIND DIR S S S SW SW W NW NW NW NW NW W W NW NW N N NE W SW SW SW
T WIND SPD 2 3 8 11 14 8 10 9 13 12 13 9 12 13 9 4 2 3 3 4 6 3
DISPERSION VP FR FR PR PR PR PR PR VP PR
ADI 2 3 14 29 45 7 9 8 12 27 75 63 91 9 4 3 2 5 16 33 30 2
MAX LVORI 10 9 5 4 3 3 4 4 4 3 1 1 1 2 2 3 3 3 2 1 2 2
STABILITY E C C C C D D D D B B B B E F E E B B A C E
CEILING 400 1100 None None None None None 15300 None 8600
STA PRES 28.78 28.67 28.75 28.81 28.87 28.81 28.91 28.93 28.93 28.84
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 48 62 37 66 41 71 47 76
TEMP 52 48 56 56 44 41 62 60 45 46 68 64 52 50 72 69
DEWPT 43 43 42 38 32 32 32 34 34 37 41 43 45 46 46 46
RH 71 83 59 51 62 70 32 37 65 71 37 46 77 86 39 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC FW FW FW FW FW FW SC FW FW SC SC
POP 12HR 50 40 0 0 0 10 10 20
RAIN SHWRS IS SC SC SC IS
TSTMS 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