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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon May 11 2026
VAZ046-120800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 AM EDT Mon May 11 2026
Date 05/10/26 Mon 05/11/26 Tue 05/12/26 Wed
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 53 56 43 72 52
TEMP 57 53 54 56 56 55 49 45 43 47 62 69 72 66 57 54 52 55
DEWPT 47 40 45 46 46 45 43 44 40 44 44 43 42 44 43 43 43 45
MIN/MAX RH 80 61 94 35 73
RH 69 61 71 69 69 69 80 96 89 89 52 39 34 45 59 66 71 69
WIND DIR NE NE NE NE NE E NW NW N N NE SW S S S S S SW
WIND SPD 10 11 10 6 4 2 2 2 3 2 3 4 5 4 5 6 10 12
WIND GUST 20 24 16 19 23 26
CLOUDS B2 OV OV OV B2 SC FW SC SC FW CL FW CL FW SC FW FW SC
CLOUDS(%) 70 88 97 92 78 42 13 35 29 16 2 11 3 16 26 22 24 36
VSBY 10 10 6 4 6 6 6 8 4 9 10 10 10 10 10 10 10 10
POP 12HR 20 100 0 0 0
RAIN SHWRS SC O SC IS
MIX HGT <1 1 2 1 2 <1 <1 <1 <1 <1 4 7 7 <1 <1 <1 <1 1
T WIND DIR NE NE N N NE SE SW SW W N NE W SW S S S S SW
T WIND SPD 20 23 24 14 6 1 2 2 2 2 3 5 8 4 5 6 8 18
DISPERSION FR VP VP VP VP VP PR PR FR
ADI 19 34 52 28 16 1 1 1 1 3 18 47 66 2 3 3 5 35
MAX LVORI 3 1 3 3 3 4 4 7 6 6 2 1 1 2 3 3 3 3
STABILITY D D C C A F G G G A A A A F F F E C
CEILING 6700 1600 21200 None None None None None None
STA PRES 29.36 29.46 29.43 29.45 29.48 29.52 29.44 29.43 29.35
Date 05/13Thu 05/14/26Fri 05/15/26Sat 05/16/26Sun 05/17/26
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 50 69 46 75 52 85 60 89
TEMP 71 64 54 53 68 64 50 51 72 68 56 57 82 78 65 64 86 82
DEWPT 54 57 54 51 45 43 42 43 44 47 46 49 53 56 56 56 57 58
RH 55 78100 93 43 46 74 74 37 47 69 75 37 47 73 75 37 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 FW FW FW SC CL CL FW FW SC FW FW SC SC FW FW
POP 12HR 80 70 0 0 0 0 5 5 5
RAIN SHWRS IS O 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