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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Tue May 26 2026
VAZ024-262000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
731 AM EDT Tue May 26 2026
Date Tue 05/26/26 Wed 05/27/26 Thu 05/28/26
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 79 65 83 62 85
TEMP 68 74 78 75 75 71 69 68 66 78 82 80 75 69 65 63 65 79 84 83 74
DEWPT 68 69 69 69 70 69 67 66 66 71 70 70 69 67 65 63 64 65 62 61 61
MAX/MIN RH 73 99 67 100 46
RH 100 84 74 82 84 93 93 93100 79 67 72 82 93100100 97 62 48 47 64
WIND DIR N N S SE E N N N SW W W W W W W NW NW NW NW N N
WIND SPD 0 0 1 2 1 0 0 0 1 3 4 3 2 1 1 2 2 3 5 5 3
CLOUDS OV B2 B1 OV OV B2 B2 B2 B2 B1 B2 B2 B1 B1 SC SC SC FW SC SC FW
CLOUDS(%) 92 84 67100 94 86 78 72 72 53 84 84 65 52 31 34 28 22 31 30 19
VSBY 2 4 7 9 5 3 4 6 10 9 9 9 8 8 3 2 8
POP 12HR 100 70 80 40 10
RAIN SHWRS SC SC SC O NM SC IS NM NM SC IS
TSTMS IS SC NM SC IS IS SC SC SC
Obvis PF PF PF PF PF
MIX HGT <1 1 3 3 <1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 1 4 7 6 <1
T WIND DIR E SE S S SE S SW SW W W W W W W W NW NW N NW N NE
T WIND SPD 2 3 5 9 6 4 10 4 8 12 18 18 10 4 3 2 2 6 1 4 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 6 20 30 3 2 5 2 8 23 62 45 5 2 2 1 4 35 10 36 1
MAX LVORI 9 6 3 3 5 8 7 8 8 3 1 3 4 6 10 10 7 1 2 1 3
STABILITY B B B B F F F F B B C B F F G G A A A A G
CEILING 800 2300 4800 5300 8300 3300 9600 None None None
STA PRES 28.61 28.55 28.54 28.52 28.51 28.46 28.46 28.45 28.47 28.45
Date Fri 05/29/26Sat 05/30/26Sun 05/31/26Mon 06/01/26
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 54 82 54 78 51 75 51 78
TEMP 59 58 79 73 59 57 75 70 58 54 72 69 57 55 76 71
DEWPT 54 54 56 59 53 53 56 58 53 51 55 57 52 52 54 56
RH 83 86 45 62 80 86 52 66 83 90 55 66 83 90 46 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC B1 SC SC B1 SC SC SC SC FW FW SC
POP 12HR 0 0 5 10 10 10 10 20
RAIN SHWRS 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