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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Tue Apr 28 2026
NCZ003-290800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 PM EDT Tue Apr 28 2026
Date 04/28/26 Wed 04/29/26 Thu 04/30/26 Fri
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 53 74 49 68 41
TEMP 69 67 59 56 55 55 62 69 73 70 60 55 52 50 59 65 67 61 50 46 42 45
DEWPT 58 59 57 56 55 55 60 63 62 59 55 49 46 45 43 40 37 36 35 34 34 35
MIN/MAX RH 100 68 87 34 74
RH 68 75 93100100100 93 81 68 68 84 80 80 83 55 40 33 39 56 63 73 68
WIND DIR S S N N N SE S SW W W NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 4 1 0 0 0 1 2 5 6 5 4 4 4 5 8 8 6 3 2 2 2 2
WIND GUST 17 17 17 17 16 18 18 18 18 13
CLOUDS B1 B1 B2 B2 B2 OV B2 B2 B1 B1 B1 B1 B1 SC FW FW FW SC SC B1 B1 B1
CLOUDS(%) 54 52 75 80 81 94 87 71 69 55 60 59 63 46 16 12 16 30 42 61 59 54
VSBY 10 10 10 5 2 3 3 5 5 10 6 10 10 10 10 10 10 10
POP 12HR 60 90 30 5 5
RAIN SHWRS IS O SC NM SC SC SC
TSTMS IS IS IS SC SC
MIX HGT 3 <1 <1 <1 <1 <1 2 3 4 1 1 1 1 3 5 7 7 1
T WIND DIR SW S S S S S S S SW W NW NW NW NW NW NW NW NW
T WIND SPD 8 4 2 3 3 3 12 11 12 13 17 17 20 23 20 18 20 20
DISPERSION VP VP VP VP PR VP VP VP VP VP VP VP
ADI 25 2 1 2 2 4 25 40 45 9 12 12 14 77117132163 9
MAX LVORI 3 4 7 10 10 9 4 3 1 3 4 4 4 4 1 1 1 2
STABILITY C F F F F B B C C E E E E A B B B G
CEILING None 800 400 400 2400 3300 None None None None
STA PRES 28.13 28.12 28.05 27.97 27.86 27.89 27.92 27.98 27.99
Date 05/01Sat 05/02/26Sun 05/03/26Mon 05/04/26Tue 05/05/26
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 68 44 62 35 65 38 71 44 73
TEMP 65 61 49 46 56 55 42 40 60 58 44 44 66 64 49 49 70 66
DEWPT 39 41 40 39 42 36 31 30 31 33 33 35 39 42 42 42 45 46
RH 38 48 71 76 59 49 65 67 33 39 65 70 37 45 77 77 41 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B2 B2 B2 B1 B1 FW FW FW FW CL FW FW SC FW SC SC
POP 12HR 20 40 40 10 0 5 10 10 20
RAIN SHWRS IS IS SC SC 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