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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Mon May 11 2026
NCZ003-120800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 PM EDT Mon May 11 2026
Date 05/11/26 Tue 05/12/26 Wed 05/13/26 Thu
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 43 73 49 74 49
TEMP 58 56 49 47 44 47 62 69 72 67 58 53 50 53 67 73 71 66 59 54 50 51
DEWPT 54 51 49 46 44 46 46 44 44 45 44 43 43 45 50 53 56 58 56 51 46 43
MIN/MAX RH 100 36 75 50 90
RH 86 83100 96100 96 56 40 37 45 59 69 77 74 54 49 59 75 90 90 86 74
WIND DIR NE E NE N N NW S S S S S S SW SW SW SW SW SW W NW NW NW
WIND SPD 5 4 2 2 2 2 3 4 5 6 5 6 6 8 10 11 9 6 6 8 8 12
WIND GUST 21 21 19 18
CLOUDS B2 FW FW SC B1 B1 FW FW FW FW CL FW FW FW SC B2 B2 B1 B1 FW FW FW
CLOUDS(%) 86 17 16 40 63 55 11 13 15 7 5 10 22 18 29 79 79 57 51 25 8 8
VSBY 4 10 9 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 50 40
RAIN SHWRS SC SC SC IS
TSTMS SC SC
Obvis PF+ PF PF
MIX HGT 2 <1 <1 <1 <1 <1 5 7 7 <1 <1 <1 <1 1 4 5 2 <1
T WIND DIR NE E N W NW NW NW W SW SW SW SW SW SW SW SW S SW
T WIND SPD 8 4 0 1 2 1 4 4 8 8 4 5 5 10 21 23 10 6
DISPERSION VP VP VP VP PR PR PR PR PR PR PR PR
ADI 16 2 0 1 1 1 27 38 64 4 2 3 3 19 81 71 26 5
MAX LVORI 3 3 6 7 5 5 2 1 1 2 3 3 4 3 1 1 3 4
STABILITY C F G G F A A A A F F F F B C D C E
CEILING 500 None None None None None None None 400 None
STA PRES 29.05 29.11 29.13 29.15 29.09 29.09 29.02 28.98 28.85
Date 05/14Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 68 42 75 52 85 59 88 62 89
TEMP 65 58 45 46 69 68 54 56 81 78 63 63 85 81 66 65 86 83
DEWPT 41 41 41 40 41 45 46 48 54 58 56 57 57 58 57 58 59 59
RH 41 53 86 79 36 43 74 74 39 50 78 81 39 46 73 78 40 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL FW FW FW FW FW SC SC SC SC FW SC FW FW FW
POP 12HR 0 0 0 5 20 20 20 5 10
RAIN SHWRS IS IS IS
TSTMS IS 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