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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Tue May 5 2026
VAZ018-060800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
831 PM EDT Tue May 5 2026
Date 05/05/26 Wed 05/06/26 Thu 05/07/26 Fri
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 58 73 56 66 43
TEMP 64 62 59 59 63 70 70 66 62 59 57 57 59 62 62 54 51 46 43 46
DEWPT 43 44 47 52 57 59 59 58 56 54 52 52 54 51 48 43 39 36 35 36
MIN/MAX RH 79 59 86 61 72
RH 46 52 64 78 81 68 68 75 81 83 83 83 83 67 60 66 63 68 73 68
WIND DIR SW SW SW SW SW SW W W W W NW NW NW NW NW NW NW NW NW NW
WIND SPD 10 10 10 11 10 12 10 5 3 2 2 2 3 5 6 6 6 5 4 3
WIND GUST 23 25 25 26 20 19 14 12 13 13 16 20 24 21 19 17 14
CLOUDS SC B1 B2 OV OV OV OV B2 OV OV OV B2 B2 B2 B2 B1 SC FW SC FW
CLOUDS(%) 50 52 85 99 95 97 93 83 90 90 93 86 80 80 76 52 43 24 34 14
VSBY 10 10 7 3 7 6 6 6 6 6 6 6 6 6 6 7 7 10 10 10
POP 12HR 70 90 90 70 20
RAIN SHWRS SC O SC O NM NM O O O NM NM NM NM IS IS
TSTMS SC SC IS IS
MIX HGT <1 <1 <1 1 2 3 3 <1 <1 <1 <1 <1 2 3 4 2
T WIND DIR S S S S S W W NW NW NW W NE NE E NW NW
T WIND SPD 10 14 16 14 13 23 16 12 8 6 1 5 6 1 10 18
DISPERSION FR FR FR PR VP VP VP PR PR PR VP
ADI 7 10 11 18 37 76 50 8 4 3 1 7 20 4 38 12
MAX LVORI 2 2 2 3 3 1 1 4 4 5 6 4 4 3 1 3
STABILITY E E E C C C C E F F F B B C C E
CEILING None 4400 800 1300 1600 500 900 3000 None
STA PRES 27.67 27.61 27.61 27.64 27.68 27.65 27.58 27.59
Date 05/08Sat 05/09/26Sun 05/10/26Mon 05/11/26Tue 05/12/26
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 70 50 73 51 80 58 71 47 69
TEMP 66 60 51 52 69 65 54 55 76 71 61 60 68 61 49 49 66 61
DEWPT 35 41 39 44 49 48 46 49 51 53 52 52 50 43 39 38 38 38
RH 32 49 63 74 49 54 74 80 42 53 72 75 52 51 68 66 36 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC B1 SC FW FW FW B1 B1 B1 B1 B1 SC FW FW SC
POP 12HR 5 5 20 5 30 40 50 10 5
RAIN SHWRS IS SC SC SC SC SC
TSTMS SC 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