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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Apr 28 2026
NCZ006-290800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
431 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 54 74 52 72 43
TEMP 70 67 59 57 55 57 66 71 74 71 62 57 53 55 65 70 72 65 52 47 44 47
DEWPT 55 56 55 56 55 57 62 63 63 63 60 55 51 50 47 42 39 38 37 36 36 38
MIN/MAX RH 100 68 94 31 75
RH 59 68 87 96100100 87 76 69 76 93 93 93 83 52 36 30 37 56 65 73 71
WIND DIR SW S S S S S S S SW W W NW NW NW NW NW NW N N N N NW
WIND SPD 6 2 2 2 2 2 5 8 6 3 3 4 5 5 6 8 8 3 2 2 2 2
WIND GUST 17
CLOUDS B1 SC B1 B1 B2 OV OV B2 B2 B2 B1 SC B1 B1 FW FW FW FW FW SC SC B1
CLOUDS(%) 67 44 54 68 78 92 92 85 79 84 57 49 51 56 24 20 15 24 25 45 48 53
VSBY 10 10 10 8 7 8 4 4 5 7 7 10 10 10 10 10 10 10
POP 12HR 30 90 40 5 5
RAIN SHWRS SC NM NM NM SC SC
TSTMS SC SC IS SC
MIX HGT 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 1 5 7 8 <1
T WIND DIR S S S S S SW S SW SW SW W NW NW NW NW NW NW NW
T WIND SPD 13 6 4 4 5 6 12 16 17 9 6 12 12 20 14 14 18 10
DISPERSION VP VP VP VP VP VP VP PR VP VP VP VP
ADI 47 3 2 2 3 7 27 47 60 4 3 8 8 32 89113152 5
MAX LVORI 1 3 6 9 9 8 4 3 1 4 6 6 6 4 1 1 1 2
STABILITY C F F F F B C C C F F E E B B B B G
CEILING None 10900 900 2400 3300 None None None None
STA PRES 29.39 29.32 29.25 29.11 29.10 29.15 29.20 29.21
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 71 48 62 39 67 42 73 46 77
TEMP 68 64 53 49 59 56 45 43 64 61 46 47 70 67 52 51 73 70
DEWPT 39 42 45 44 44 42 36 36 32 34 36 38 39 41 44 45 45 46
RH 34 45 74 83 57 59 70 76 30 36 68 71 32 39 74 80 37 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B2 B2 B2 B2 B1 FW CL FW FW CL FW FW SC FW FW FW
POP 12HR 10 40 50 10 0 5 5 10 10
RAIN SHWRS IS SC SC SC
$$
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