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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Mon May 4 2026
VAZ018-050800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 AM EDT Mon May 4 2026
Date 05/03/26 Mon 05/04/26 Tue 05/05/26 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 45 75 55 80 60
TEMP 46 45 49 62 70 74 68 60 57 55 58 73 79 78 69 66 63 61 60
DEWPT 26 30 34 42 46 47 45 43 42 43 45 47 44 44 45 46 47 50 54
MIN/MAX RH 57 38 65 28 82
RH 45 55 56 48 42 38 43 53 57 64 62 40 29 30 42 48 56 67 81
WIND DIR W W W W W SW SW SW SW W SW SW S S S S S S S
WIND SPD 1 2 2 9 11 10 5 6 6 5 4 6 10 10 6 6 8 6 6
WIND GUST 18 23 26 27 26 26 26 25 26
CLOUDS B2 B2 B1 SC SC B1 SC FW SC SC FW FW SC B1 B2 B1 B2 B2 OV
CLOUDS(%) 79 70 51 49 33 52 37 20 35 28 15 19 43 55 73 64 78 83 90
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 30 5 10 70
RAIN SHWRS SC IS IS NM NM O
TSTMS SC
MIX HGT <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 5 7 7 <1
T WIND DIR SW SW W W W SW S S SW SW SW S S S S
T WIND SPD 2 3 11 18 11 19 8 10 8 5 10 16 27 29 12
DISPERSION VP VP PR PR PR PR PR PR PR PR
ADI 1 2 11 73 66 81 4 5 4 3 10 87200200 8
MAX LVORI 2 2 2 1 1 1 2 2 3 3 2 1 1 1 2
STABILITY F F A B B C G F F F A B B B E
CEILING 7500 None None None None None 19400 3700
STA PRES 27.76 27.76 27.68 27.68 27.71 27.70 27.64
Date 05/06Thu 05/07/26Fri 05/08/26Sat 05/09/26Sun 05/10/26
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 74 54 66 41 66 48 68 47 73
TEMP 71 65 59 57 59 55 46 47 63 57 49 52 65 60 50 52 70 63
DEWPT 59 55 52 53 50 39 35 35 36 38 41 44 49 44 41 41 46 47
RH 66 70 78 86 72 55 65 63 36 49 74 74 56 55 71 66 42 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV OV B2 OV OV B2 SC SC FW SC SC SC B1 B1 SC FW FW SC
POP 12HR 90 90 80 20 10 30 50 20 20
RAIN SHWRS O O NM O O NM IS IS SC SC SC IS IS
TSTMS SC IS IS 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