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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 AM EDT Sun May 10 2026
NCZ006-110800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
101 AM EDT Sun May 10 2026
Date 05/09/26 Sun 05/10/26 Mon 05/11/26 Tue
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 54 85 56 70 45
TEMP 59 55 58 76 83 84 75 65 62 59 60 64 65 66 61 54 51 48 51
DEWPT 54 53 55 54 49 49 53 53 54 56 55 59 53 51 49 47 45 43 42
MIN/MAX RH 96 28 95 59 86
RH 83 93 90 46 31 30 46 65 75 90 84 84 65 58 65 77 80 83 71
WIND DIR N N N NW SW SW S N N N NE NE N N N S N N N
WIND SPD 0 0 0 1 2 4 1 0 0 1 5 6 9 8 3 2 2 3 4
CLOUDS B1 B1 FW CL CL CL FW B1 FW SC B2 OV OV OV B2 SC SC FW FW
CLOUDS(%) 62 58 13 2 2 3 10 63 20 28 70 88 94 90 81 49 44 25 21
VSBY 10 9 10 10 10 10 10 10 10 10 10 10 9 6 10
POP 12HR 10 0 5 60 5
RAIN SHWRS SC SC SC SC
MIX HGT <1 <1 <1 4 7 8 <1 <1 <1 <1 1 2 2 2 1
T WIND DIR W W W NW W W SW SW W NE NE NE NE NE NE
T WIND SPD 3 3 2 6 6 11 4 3 3 9 16 13 23 9 9
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 34 61109 2 2 2 4 29 37 64 25 4
MAX LVORI 5 7 5 1 1 1 2 3 4 6 4 4 1 2 3
STABILITY F F A A A A F G G F B C C C F
CEILING None None None None None 6300 2100 None
STA PRES 29.29 29.37 29.33 29.36 29.41 29.46 29.47
Date 05/12Wed 05/13/26Thu 05/14/26Fri 05/15/26Sat 05/16/26
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 72 48 77 51 76 47 78 52 85
TEMP 68 64 51 53 75 71 58 55 73 69 53 53 75 71 57 58 83 79
DEWPT 38 41 41 45 50 53 53 52 46 45 45 46 47 50 49 51 52 54
RH 33 43 68 74 41 53 83 90 38 42 74 77 37 47 75 77 34 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 B2 SC FW FW FW CL FW FW FW FW FW FW
POP 12HR 0 0 30 70 5 0 5 5 0
RAIN SHWRS SC NM
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