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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Wed Apr 29 2026
NCZ005-300800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
731 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 54 72 44 71 49
TEMP 68 63 59 55 56 63 69 70 62 53 48 44 47 59 67 70 64 56 55 51 49
DEWPT 62 59 55 52 51 47 43 38 37 36 36 36 37 37 36 36 39 40 42 43 45
MIN/MAX RH 90 31 73 29 87
RH 81 87 87 90 83 56 39 31 39 52 63 73 68 44 32 29 40 55 61 74 86
WIND DIR SW NW NW NW NW NW NW NW NW N N N N NE S SW SW SW N N N
WIND SPD 4 5 5 4 5 8 9 10 5 5 4 2 2 3 5 6 3 3 3 4 5
CLOUDS B2 B1 B1 B2 B2 SC FW FW FW FW SC B1 B1 SC SC SC B2 B2 OV OV OV
CLOUDS(%) 77 54 62 72 79 39 25 18 20 23 42 53 61 37 37 48 77 81 89 90 88
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 0 0 5 40
RAIN SHWRS SC SC SC NM
TSTMS IS
MIX HGT <1 <1 <1 <1 <1 4 6 7 <1 <1 <1 <1 <1 4 6 7 <1
T WIND DIR S NW NW N NW NW NW NW NW N N N N SE S SW SW
T WIND SPD 2 2 4 3 10 13 9 12 13 8 9 5 10 2 5 11 10
DISPERSION VP PR PR VP PR PR VP VP VP VP VP VP
ADI 2 2 3 2 11 69 64 98 6 4 6 3 12 11 43 87 5
MAX LVORI 4 7 6 6 4 1 1 1 2 2 3 3 3 2 1 1 2
STABILITY E E E E B B B B F F E F B A A B F
CEILING None 8500 None None None None None None 17700
STA PRES 29.04 29.08 29.13 29.11 29.22 29.26 29.28 29.20
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 61 38 68 42 76 53 80 52 81
TEMP 55 56 46 44 64 60 46 47 73 69 58 56 78 71 58 57 77 74
DEWPT 47 42 36 34 32 34 34 37 40 45 47 49 47 49 49 50 51 53
RH 74 59 68 68 30 37 63 68 30 42 67 77 33 46 72 77 40 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B1 B1 SC CL FW CL CL FW FW SC SC FW SC SC SC SC SC
POP 12HR 60 20 0 0 5 10 10 5 20
RAIN SHWRS NM SC IS 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