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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Tue May 12 2026
NCZ006-122000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
1001 AM EDT Tue May 12 2026
Date Tue 05/12/26 Wed 05/13/26 Thu 05/14/26
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 75 50 79 51 71
TEMP 64 72 75 68 57 55 51 54 70 77 77 69 60 56 51 53 63 68 70 64
DEWPT 46 42 42 45 43 44 44 48 53 51 53 56 57 56 51 49 46 43 42 42
MAX/MIN RH 31 82 40 100 37
RH 52 34 31 43 59 66 77 80 55 40 43 63 90100100 86 54 40 36 45
WIND DIR N S S S S S S SW SW S SW SW SW W NW NW NW NW NW NW
WIND SPD 0 3 4 3 3 5 4 4 9 9 8 3 2 1 3 5 9 9 10 4
CLOUDS CL FW CL FW CL FW CL CL FW SC SC B2 B2 SC FW CL FW FW SC FW
CLOUDS(%) 5 8 4 7 4 6 3 5 10 41 46 85 85 32 13 5 9 24 29 24
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 30 80 0
RAIN SHWRS O O
TSTMS SC
MIX HGT 3 7 7 <1 <1 <1 <1 1 4 7 5 <1 <1 <1 <1 2 5 7 7 <1
T WIND DIR W S S S S S S SW SW SW S W SW NW NW NW NW NW NW NW
T WIND SPD 1 5 9 5 5 6 8 13 18 18 19 10 3 6 11 23 19 17 19 16
DISPERSION VP VP PR VP VP VP VP VP VP
ADI 4 47 78 3 3 3 4 19 94133120 5 2 3 5 58115123145 7
MAX LVORI 2 1 1 2 3 3 4 3 1 1 1 3 6 9 7 4 1 1 1 2
STABILITY A A A G G F F A B B B F F G G A B B B F
CEILING None None None None None 3800 None None None
STA PRES 29.52 29.52 29.49 29.42 29.26 29.23 29.26 29.28 29.24
Date Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 45 77 53 88 62 92 64 93
TEMP 49 50 74 71 57 59 86 82 67 66 90 84 70 69 92 86
DEWPT 42 42 42 47 46 50 55 58 57 60 59 61 60 63 62 61
RH 77 74 32 42 67 72 35 44 70 81 35 46 71 81 37 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL FW FW SC FW FW FW SC SC FW SC SC SC SC FW
POP 12HR 0 0 0 5 10 10 5 5
$$
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