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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Sun May 10 2026
NCZ006-102000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
1001 AM EDT Sun May 10 2026
Date Sun 05/10/26 Mon 05/11/26 Tue 05/12/26
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 86 54 69 44 73
TEMP 76 83 84 74 65 61 57 59 64 64 65 60 52 48 45 48 63 70 73 67
DEWPT 56 50 50 54 52 53 53 53 54 53 53 52 51 48 45 47 46 43 42 45
MAX/MIN RH 30 91 61 100 33
RH 50 32 31 50 63 75 86 80 70 67 65 75 96100100 96 54 38 33 45
WIND DIR NW W SW S N N N NE NE NE NE N N N N NE NE NE E N
WIND SPD 3 4 5 1 0 0 1 5 6 6 5 0 0 0 1 2 3 2 1 0
CLOUDS FW FW CL FW B1 FW SC B2 OV OV OV OV SC SC SC SC FW FW FW FW
CLOUDS(%) 10 6 5 22 63 20 28 70 88 92 89 92 47 34 33 29 10 8 6 9
VSBY 10 10 10 10 10 10 10 10 10 9 8 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 50 5 0
RAIN SHWRS SC SC IS SC
MIX HGT 5 8 8 <1 <1 <1 <1 2 2 2 2 <1 <1 <1 <1 1 4 6 6 <1
T WIND DIR NW W W SW S W NE NE NE NE N N N N N NE NE NE NE E
T WIND SPD 8 6 8 3 4 3 5 17 16 18 14 20 12 5 4 11 14 9 4 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 46 62 78 2 2 2 3 36 40 45 32 9 6 3 2 18 85 65 33 1
MAX LVORI 1 1 1 2 3 3 6 3 3 1 3 3 6 9 9 5 1 1 1 2
STABILITY A A A G F G G C C C C F F G G A A A A G
CEILING None None None 6900 2900 None None None None
STA PRES 29.33 29.36 29.38 29.44 29.44 29.48 29.51 29.56 29.51
Date Wed 05/13/26Thu 05/14/26Fri 05/15/26Sat 05/16/26
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 50 78 51 74 47 78 54 87
TEMP 53 54 77 71 57 54 72 68 52 52 75 72 58 59 84 80
DEWPT 44 48 52 55 54 52 46 45 44 45 46 50 49 51 53 56
RH 71 80 42 57 90 93 39 43 74 77 36 46 72 75 34 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC B1 B2 SC FW FW FW CL FW FW FW SC FW FW
POP 12HR 0 30 70 5 0 0 5 5
RAIN SHWRS SC NM 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