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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Wed May 13 2026
NCZ006-140800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
301 PM EDT Wed May 13 2026
Date 05/13/26 Thu 05/14/26 Fri 05/15/26 Sat
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 52 70 46 78 52
TEMP 79 73 63 59 54 54 63 67 68 63 53 49 46 51 66 75 78 71 59 55 52 57
DEWPT 50 52 54 55 51 48 44 41 41 41 41 41 41 43 43 41 43 48 46 45 45 48
MIN/MAX RH 91 36 81 27 76
RH 36 48 72 87 90 80 50 39 37 44 64 74 83 74 43 29 29 44 62 69 77 72
WIND DIR SW SW W NW NW NW NW NW NW NW NW NW W W NW W W SW S SW SW SW
WIND SPD 8 2 1 1 3 8 9 9 10 5 2 2 2 3 5 4 4 1 1 1 1 3
CLOUDS SC B1 B1 B1 SC CL FW SC SC FW CL FW CL CL CL FW FW SC FW FW FW SC
CLOUDS(%) 29 67 67 54 32 3 6 26 32 11 5 6 3 4 3 17 12 26 9 19 21 33
VSBY 10 7 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 0 0 0 0
RAIN SHWRS IS IS
MIX HGT 7 <1 <1 <1 <1 2 5 6 7 <1 <1 <1 <1 1 5 6 6 <1
T WIND DIR SW SW SW NW NW NW NW NW NW NW NW W W NW NW W W SW
T WIND SPD 13 6 5 5 9 18 16 16 18 8 3 4 5 11 14 9 9 2
DISPERSION VP VP VP VP PR VP VP VP VP VP VP VP
ADI 102 3 3 3 4 43 87113135 4 2 2 3 19 93 71 68 1
MAX LVORI 1 2 3 6 6 3 1 1 1 2 3 3 5 3 1 1 1 2
STABILITY B F F F G B B B B F G G G A A A A G
CEILING 5400 None None None None None None None None
STA PRES 29.17 29.19 29.25 29.27 29.34 29.38 29.42 29.38
Date 05/16Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
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 87 62 89 64 90 65 90 67 90
TEMP 85 81 67 65 88 82 68 67 89 84 70 68 89 83 71 69 88 83
DEWPT 52 56 55 58 58 61 60 62 61 62 61 63 60 62 62 64 61 62
RH 32 42 65 78 36 49 76 84 39 48 73 84 38 49 73 84 40 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC FW FW FW FW FW FW FW FW SC SC SC B1
POP 12HR 0 5 5 5 5 0 5 10 30
RAIN SHWRS SC
TSTMS 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