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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Fri May 15 2026
NCZ006-152000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
401 AM EDT Fri May 15 2026
Date Fri 05/15/26 Sat 05/16/26 Sun 05/17/26
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 77 52 87 61 93
TEMP 45 50 65 74 77 71 59 57 54 57 76 84 86 79 70 66 62 65 81 91 93 85
DEWPT 39 40 39 39 40 45 43 43 42 45 50 50 51 53 52 53 54 57 60 58 56 60
MAX/MIN RH 26 67 29 79 29
RH 79 68 38 28 26 39 55 59 64 64 40 31 30 41 53 63 75 75 49 33 29 43
WIND DIR W NW NW NW W N S S S SW SW SW SW S S S S SW SW SW S S
WIND SPD 3 2 5 4 3 0 1 1 2 2 6 9 8 4 4 4 4 4 4 4 5 2
CLOUDS CL CL CL CL FW SC SC FW FW FW FW FW SC SC SC SC SC SC SC SC FW FW
CLOUDS(%) 3 2 1 3 14 26 42 18 18 14 20 18 28 42 31 40 48 47 27 30 21 18
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 0 0
MIX HGT <1 <1 5 6 7 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 3 7 7 <1
T WIND DIR W NW N NW W S S S S SW SW SW SW SW S SW SW SW W S S S
T WIND SPD 5 10 16 13 8 2 3 3 4 4 14 14 16 5 5 6 4 8 6 8 10 8
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 12 98108 64 1 2 2 2 4 66 95100 4 3 3 3 9 30 64 91 4
MAX LVORI 4 3 1 1 1 2 3 3 3 3 1 1 1 2 2 3 4 4 2 1 1 2
STABILITY G A A A A G F G G A B B B E F F E A A A A G
CEILING None None None None None None None None None None
STA PRES 29.45 29.41 29.47 29.52 29.53 29.47 29.48 29.52 29.56 29.54
Date Mon 05/18/26Tue 05/19/26Wed 05/20/26Thu 05/21/26
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 65 95 64 93 66 94 67 87
TEMP 69 69 94 87 70 67 91 86 72 70 93 86 72 69 85 78
DEWPT 60 62 59 59 60 62 56 56 59 63 58 59 62 63 60 61
RH 73 78 31 39 71 84 31 36 64 78 31 40 71 81 43 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL FW FW CL CL FW FW FW FW SC B1 SC B1 B2
POP 12HR 5 5 5 0 0 20 30 60
RAIN SHWRS IS SC IS SC NM
TSTMS IS IS 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