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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon May 4 2026
VAZ018-050800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Mon May 4 2026
Date 05/04/26 Tue 05/05/26 Wed 05/06/26 Thu
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 80 60 77 57
TEMP 60 57 55 58 72 79 78 69 65 63 60 60 66 73 75 69 63 61 58 57
DEWPT 43 42 42 44 46 42 40 44 45 47 49 53 58 60 60 59 57 55 54 53
MIN/MAX RH 62 25 79 59 88
RH 53 57 61 59 39 27 26 40 48 56 67 78 75 64 60 70 81 81 86 86
WIND DIR SW SW W W SW SW S S SW S S S S SW SW SW W W W W
WIND SPD 4 5 4 4 6 9 9 6 6 6 6 6 8 9 8 5 4 3 3 4
WIND GUST 18 18 18 18 21 24 26 24 24 24 24 26 26 25 24 21 17 16 14 17
CLOUDS FW FW SC FW FW SC B1 B1 B2 B2 B2 OV OV OV OV OV OV OV OV B2
CLOUDS(%) 8 20 32 8 8 29 63 66 70 76 77 90 90 95 95 92 92 92 92 84
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 60 90 90
RAIN SHWRS NM NM O O O O O O O O O
TSTMS SC SC IS
MIX HGT <1 <1 <1 <1 5 7 7 1 <1 <1 <1 1 2 4 3 <1
T WIND DIR SW SW SW SW SW SW S S S S S S SW SW W W
T WIND SPD 8 6 4 5 17 26 29 16 17 24 12 12 23 25 28 16
DISPERSION VP PR VP PR PR PR PR PR VP VP VP
ADI 4 3 2 6 95124138 14 12 16 8 17 60 88 99 11
MAX LVORI 2 3 3 3 1 1 1 2 2 2 3 3 3 1 1 3
STABILITY F F F B B C C D E E E C C C C E
CEILING None None None 29200 7500 1200 600 1300 1400
STA PRES 27.70 27.73 27.72 27.67 27.67 27.62 27.62 27.64
Date 05/07Fri 05/08/26Sat 05/09/26Sun 05/10/26Mon 05/11/26
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 67 42 69 48 72 49 76 55 75
TEMP 65 56 46 45 66 60 51 51 68 64 52 53 74 68 58 59 73 65
DEWPT 52 41 36 35 37 38 37 42 43 42 41 43 47 49 48 51 55 52
RH 63 57 68 68 34 44 59 71 40 45 66 69 38 51 69 75 53 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC FW FW FW SC SC B1 FW FW FW SC SC B1 B1 B2
POP 12HR 80 30 10 20 30 5 20 30 60
RAIN SHWRS O NM SC IS IS SC IS IS SC SC NM
TSTMS IS IS IS SC
$$
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