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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri May 22 2026
VAZ018-222000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
301 AM EDT Fri May 22 2026
Date Fri 05/22/26 Sat 05/23/26 Sun 05/24/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 64 54 67 59 79
TEMP 58 57 60 61 63 59 58 57 56 56 59 62 65 63 63 61 61 63 72 78 76 70
DEWPT 55 55 59 59 59 55 54 52 52 53 58 60 62 60 59 58 58 59 66 68 69 66
MAX/MIN RH 84 96 84 90 71
RH 90 93 96 93 87 87 86 83 86 90 96 93 90 90 87 90 90 87 81 71 79 87
WIND DIR E E E E E E E E E E E E E SE E N N N S S S SE
WIND SPD 3 4 4 4 4 5 4 4 3 3 3 3 3 2 1 0 0 0 1 2 2 1
WIND GUST 13 16 16 16 16 20 20 17 16 14 13
CLOUDS OV OV OV OV OV OV OV OV OV OV B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 91 99 91 93 95 95 95 93 91 93 86 86 87 89 88 87 86 78 74 83 83 75
VSBY 1 1 2 2 2 1 1 1 2 2 2 4 2 1 0
POP 12HR 100 90 90 80 70
RAIN SHWRS SC O NM NM O O NM NM O O O SC SC O O SC SC IS IS NM NM NM
TSTMS IS IS IS IS SC SC IS
MIX HGT <1 <1 1 1 1 <1 <1 <1 <1 <1 1 1 1 <1 <1 <1 <1 <1 1 3 3 <1
T WIND DIR E E E E E E E E E E E E E E E N N SW S SW S S
T WIND SPD 9 9 9 11 13 10 9 10 9 9 6 6 5 4 3 0 0 1 3 6 8 11
DISPERSION VP PR VP VP VP VP VP VP VP VP
ADI 4 10 14 18 20 7 6 7 4 11 10 10 9 2 2 0 0 1 5 23 27 5
MAX LVORI 6 5 5 5 4 5 5 4 5 5 6 5 5 6 7 7 7 7 4 3 3 5
STABILITY F C C C C E E E F B B B B F F F F B B B B F
CEILING 100 100 100 100 100 100 100 100 100 2400
STA PRES 27.96 27.94 27.96 27.95 27.97 27.93 27.93 27.91 27.92 27.88
Date Mon 05/25/26Tue 05/26/26Wed 05/27/26Thu 05/28/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 64 81 64 78 64 80 63 81
TEMP 66 67 79 73 68 67 77 73 68 67 78 73 67 67 79 73
DEWPT 62 63 70 67 63 63 69 66 62 63 68 66 61 61 65 63
RH 87 87 74 81 84 87 76 79 81 87 71 79 81 81 62 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 OV B2 B2 B2 OV B2 B2 B2 B2 B1 B1 B1 B1
POP 12HR 60 80 70 80 50 80 40 40
RAIN SHWRS NM SC SC O NM SC O O SC SC NM O SC SC SC SC
TSTMS IS IS SC IS IS SC IS SC 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