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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Sat May 23 2026
VAZ018-240800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 PM EDT Sat May 23 2026
Date 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue
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 73 63 81 64
TEMP 55 55 55 55 56 66 72 70 69 66 65 64 66 75 79 77 71 68 66 65 67
DEWPT 53 53 53 54 56 60 64 65 65 63 61 60 62 68 69 69 66 65 63 62 63
MIN/MAX RH 99 77 92 70 90
RH 93 93 93 96100 81 76 84 87 90 87 87 87 79 72 76 84 90 90 90 87
WIND DIR SE SE SE SE S S S S SE N N W W W W N N N N N N
WIND SPD 4 4 4 3 3 3 3 3 2 0 0 1 1 1 1 0 0 0 0 0 0
CLOUDS OV OV OV OV OV OV B2 B2 B2 OV B2 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 100 98 96 93 90 89 80 83 86 89 81 67 68 65 86 86 85 87 86 87 82
VSBY 2 1 1 1 1 4 8 10 8 4 2 1 2 5 7 9 5
POP 12HR 60 30 30 80 70
RAIN SHWRS SC NM SC IS IS SC SC SC IS IS SC SC O O NM NM SC SC NM
TSTMS IS SC SC IS
MIX HGT <1 <1 <1 <1 <1 <1 2 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR E SE E NE E SW SW S S S SW NW W W NW NW N
T WIND SPD 5 4 2 2 2 4 4 8 11 5 4 3 9 9 16 9 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 1 1 2 6 14 20 5 3 2 2 10 21 54 21 3
MAX LVORI 8 6 6 6 6 6 4 3 5 6 6 7 5 3 3 3 6
STABILITY F F F F B B B B F F F F B A B B F
CEILING 200 100 100 1600 1600 100 4600 2900 3200
STA PRES 27.96 27.95 27.94 27.89 27.88 27.88 27.92 27.89
Date 05/26Wed 05/27/26Thu 05/28/26Fri 05/29/26Sat 05/30/26
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 80 64 80 64 82 61 76 56 72
TEMP 79 70 67 68 79 74 68 68 81 75 66 65 75 69 61 59 70 65
DEWPT 70 67 63 64 69 66 61 62 66 64 59 58 60 58 53 51 55 53
RH 74 90 87 87 72 76 78 81 60 69 78 78 60 68 75 75 59 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B2 B2 B2 OV B1 B1 B1 B2 SC B1 B1 B1 B1 B1 B1 B1
POP 12HR 100 70 90 30 60 20 50 40 40
RAIN SHWRS NM O NM SC NM O SC IS SC NM IS IS SC SC SC SC SC SC
TSTMS SC IS IS SC SC 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