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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat May 16 2026
NCZ003-170800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
731 PM EDT Sat May 16 2026
Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue
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 58 89 60 89 61
TEMP 78 66 63 60 63 81 86 88 82 70 66 62 65 82 86 88 83 71 66 61 65
DEWPT 58 55 53 53 55 59 59 60 62 60 59 58 60 64 62 59 59 58 57 57 59
MIN/MAX RH 80 39 90 37 86
RH 50 68 70 78 75 47 40 39 51 71 78 87 84 55 45 38 44 63 73 87 81
WIND DIR S N N N N N S S S N N N N S S S S N N N N
WIND SPD 1 0 0 0 0 0 3 5 2 0 0 0 0 3 8 8 3 0 0 0 0
WIND GUST 18 14
CLOUDS SC B1 B1 SC FW FW FW FW FW FW FW FW SC FW FW FW FW FW FW FW FW
CLOUDS(%) 48 54 62 32 24 13 14 16 9 6 7 18 28 8 9 14 18 16 21 22 14
VSBY 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 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR SW SW W NW NW W S S S S W W SW SW S S S
T WIND SPD 10 3 2 2 1 1 8 10 11 5 2 2 9 8 9 12 12
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 5 2 1 1 1 5 63 80 5 3 1 1 9 33 63 97 6
MAX LVORI 2 3 3 4 3 2 1 1 2 3 4 6 4 1 1 1 2
STABILITY F F F G A A A A G G G G A A B B G
CEILING None None None None None None None None None
STA PRES 28.19 28.22 28.28 28.25 28.30 28.33 28.38 28.34
Date 05/19Wed 05/20/26Thu 05/21/26Fri 05/22/26Sat 05/23/26
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 90 62 89 62 80 54 69 54 72
TEMP 87 83 68 67 86 81 67 66 77 72 60 58 67 66 59 57 69 69
DEWPT 57 56 55 56 62 64 62 62 66 64 58 56 61 60 57 56 63 62
RH 36 40 63 68 45 56 84 87 69 76 93 93 81 81 93 96 81 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC SC B2 B1 SC B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
POP 12HR 0 0 60 30 80 80 80 60 50
RAIN SHWRS IS NM SC IS NM O O NM NM O NM SC SC SC
TSTMS IS SC IS IS SC IS 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