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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 15 2026
NCZ003-160800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 PM EDT Fri May 15 2026
Date 05/15/26 Sat 05/16/26 Sun 05/17/26 Mon
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 51 84 58 88 60
TEMP 58 54 52 56 73 80 83 78 66 63 59 62 80 85 87 81 69 64 61 65
DEWPT 44 43 42 46 51 53 55 56 54 53 51 54 58 58 59 61 60 59 58 59
MIN/MAX RH 71 38 78 38 90
RH 59 66 69 69 46 39 38 47 65 70 75 75 47 40 39 51 73 84 90 81
WIND DIR N N SW N S S SW SW N N N N N S S S N N N N
WIND SPD 0 0 1 0 3 5 5 2 0 0 0 0 0 4 5 2 0 0 0 0
CLOUDS FW FW FW FW FW B1 B2 SC SC B1 SC B1 SC FW FW FW SC FW CL CL
CLOUDS(%) 17 11 17 19 15 51 73 40 48 60 37 55 26 13 16 23 27 10 5 5
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 5 5
MIX HGT <1 <1 <1 <1 2 5 5 <1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR SW SW SW SW SW SW SW S SW SW NW NW NW S S S
T WIND SPD 3 2 2 3 9 11 12 10 5 2 3 1 5 5 9 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 3 30 68 76 5 3 1 2 1 26 46 77 5
MAX LVORI 3 3 3 3 2 1 1 2 3 3 4 3 2 1 1 2
STABILITY G G G A A B B G F F G A A A A G
CEILING None None None None None None None None None
STA PRES 28.19 28.21 28.24 28.19 28.21 28.23 28.28 28.26
Date 05/18Tue 05/19/26Wed 05/20/26Thu 05/21/26Fri 05/22/26
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 88 60 88 62 85 60 76 56 75
TEMP 86 85 67 65 86 83 67 66 83 78 65 63 74 70 60 59 73 71
DEWPT 61 59 57 58 58 57 56 58 62 63 60 59 62 61 57 55 59 60
RH 43 41 70 78 39 41 68 75 49 60 84 87 66 73 90 87 62 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW CL FW FW SC SC B1 B1 B1 B1 B2 B2 B1 B1 B1 B1
POP 12HR 5 0 10 5 50 30 70 40 50
RAIN SHWRS SC SC SC SC NM NM SC SC SC SC
TSTMS SC IS 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