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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Fri May 15 2026
NCZ003-152000-
RAWS 310301
36.48N 80.86W Elev. 1300 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 51 84 57 89
TEMP 44 48 64 73 76 71 58 54 52 57 74 80 83 78 66 61 58 62 80 85 88 82
DEWPT 36 37 38 39 41 46 45 43 41 44 50 52 54 56 54 52 51 53 57 57 57 59
MAX/MIN RH 28 69 37 78 35
RH 73 65 38 29 28 41 62 66 66 62 43 38 37 47 65 72 77 72 45 39 35 46
WIND DIR NW NW NW NW S N N N N N S S S S N N N N N S S S
WIND SPD 3 4 3 1 2 0 0 0 0 0 3 6 5 2 0 0 0 0 0 4 5 2
WIND GUST 16
CLOUDS FW CL CL CL FW B1 SC FW SC SC SC SC SC OV SC SC B1 B1 SC FW FW FW
CLOUDS(%) 13 2 2 2 19 59 28 19 35 27 27 44 38 90 50 34 53 58 32 23 24 24
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 5
MIX HGT <1 1 4 6 6 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR NW NW NW W SW S SW SW SW SW SW SW SW S SW SW W N S S S S
T WIND SPD 6 17 10 6 6 6 2 1 2 3 11 12 10 9 3 3 2 0 3 8 11 9
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 24 48 50 48 3 1 1 1 3 37 78 64 4 2 2 1 0 14 60 96 4
MAX LVORI 4 3 1 1 1 2 3 4 3 3 1 1 1 2 3 3 4 4 2 1 1 2
STABILITY G A A A A F G G G A A B A F F G F A A A A G
CEILING None None None None None None None None None None
STA PRES 28.19 28.14 28.21 28.24 28.27 28.23 28.25 28.26 28.31 28.30
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 61 90 61 90 63 89 61 84
TEMP 65 66 87 84 68 66 87 84 68 67 85 82 67 65 81 76
DEWPT 57 58 59 57 57 59 56 55 56 58 59 60 60 59 60 60
RH 75 75 39 40 68 78 35 37 65 73 41 47 78 81 49 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL FW FW CL CL FW SC FW SC B1 B1 SC B1 B2
POP 12HR 5 5 5 5 5 40 30 60
RAIN SHWRS IS SC SC IS SC NM
TSTMS 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