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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Thu Apr 30 2026
NCZ003-302000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
1031 AM EDT Thu Apr 30 2026
Date Thu 04/30/26 Fri 05/01/26 Sat 05/02/26
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 70 40 69 45 62
TEMP 60 66 66 58 49 45 42 44 57 65 68 64 54 51 48 46 52 57 60 56
DEWPT 47 42 37 36 35 35 34 35 37 38 39 41 41 41 40 41 42 43 40 37
MAX/MIN RH 35 76 34 83 46
RH 62 42 34 44 58 68 73 70 47 37 34 43 61 68 74 83 69 59 47 49
WIND DIR NW NW NW NW N N NW N S S SW W NW N N N N N N NW
WIND SPD 5 6 6 4 2 2 1 0 2 4 5 2 2 2 2 2 2 4 5 4
WIND GUST 18 16
CLOUDS SC FW FW FW SC SC B1 B2 SC SC B1 B2 B2 B2 OV OV OV B2 B1 SC
CLOUDS(%) 36 15 14 12 26 28 59 77 36 42 60 83 85 87 92 89 88 81 67 46
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 40 50
RAIN SHWRS SC SC SC SC SC SC IS
MIX HGT 4 6 6 <1 <1 <1 <1 1 4 7 6 <1 <1 2 2 2 4 6 6 2
T WIND DIR NW NW NW NW N N N N S SW SW S NW N N N N NW NW NW
T WIND SPD 19 14 16 14 12 6 5 5 3 8 10 8 2 10 13 10 6 10 13 19
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 101 68 74 7 6 3 3 8 16 64 73 4 1 5 6 28 31 47 63 13
MAX LVORI 1 1 1 2 3 3 3 3 2 1 1 2 3 3 3 3 3 1 1 2
STABILITY B C C F G G F A A A B F F F F B B C C E
CEILING None None 15100 None 14800 7100 8900 3300 5300
STA PRES 27.96 28.06 28.08 28.11 28.03 28.05 28.04 28.06 28.00
Date Sun 05/03/26Mon 05/04/26Tue 05/05/26Wed 05/06/26
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 37 66 39 76 47 79 52 80
TEMP 41 41 61 59 42 44 72 68 53 52 76 73 57 55 75 75
DEWPT 32 30 32 33 32 34 41 44 44 45 48 49 49 50 55 56
RH 70 65 33 37 67 68 33 42 71 77 37 43 75 83 50 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW CL CL CL FW FW SC FW FW SC SC SC B1 B1
POP 12HR 20 5 0 5 5 10 20 40
RAIN SHWRS IS IS SC SC
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