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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Sat May 9 2026
NCZ005-092000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
931 AM EDT Sat May 9 2026
Date Sat 05/09/26 Sun 05/10/26 Mon 05/11/26
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 53 82 56 68
TEMP 66 72 76 71 61 58 55 58 74 81 81 73 65 61 57 60 63 66 63 58
DEWPT 57 56 55 57 56 56 54 55 57 53 52 56 55 56 56 57 57 55 52 50
MAX/MIN RH 49 99 36 96 67
RH 73 57 48 61 84 93 96 90 55 38 37 55 70 84 96 90 81 68 67 75
WIND DIR SW SW SW SW SW W W W W SW SW S SW W N N NE N NE NE
WIND SPD 6 10 8 3 3 2 2 2 2 4 5 2 2 2 3 6 9 9 8 3
CLOUDS B2 B1 SC SC FW SC SC SC CL FW FW FW SC B1 B2 B2 B2 B2 B2 B1
CLOUDS(%) 77 61 48 50 16 39 47 29 4 13 7 9 38 54 77 86 86 86 86 54
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 6 6 6 6 10
POP 12HR 20 5 0 30 80
RAIN SHWRS SC SC O O O O
MIX HGT 3 5 5 <1 <1 <1 <1 <1 4 7 8 <1 <1 <1 <1 1 2 2 2 1
T WIND DIR S SW W W NW W SW SW W SW SW S S S SE N N NE N NE
T WIND SPD 9 23 21 9 6 3 3 2 6 8 10 3 3 4 1 11 26 26 16 13
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 30 96128 4 3 2 2 2 33 70 99 2 2 2 1 19 63 68 45 6
MAX LVORI 3 1 1 3 5 7 8 6 1 1 1 2 3 5 9 4 3 1 1 4
STABILITY C C B F G G F A A A A G G F F C C C C F
CEILING None None None None None None 7800 300 1100
STA PRES 29.07 29.16 29.21 29.27 29.22 29.20 29.12 29.20 29.28
Date Tue 05/12/26Wed 05/13/26Thu 05/14/26Fri 05/15/26
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 44 69 48 73 52 74 49 76
TEMP 48 48 66 63 51 53 71 67 57 55 72 68 54 54 73 70
DEWPT 44 42 40 42 41 45 51 53 52 52 49 49 47 49 50 51
RH 86 80 38 46 68 74 49 61 83 90 44 51 77 83 44 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW CL FW FW SC B1 B1 SC FW FW FW FW SC SC
POP 12HR 10 0 0 30 50 10 5 5
RAIN SHWRS IS SC SC IS
TSTMS 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