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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 AM EDT Fri May 1 2026
NCZ005-020800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
1201 AM EDT Fri May 1 2026
Date 04/30/26 Fri 05/01/26 Sat 05/02/26 Sun
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 44 71 48 59 40
TEMP 48 45 48 59 66 71 63 57 54 51 49 53 55 58 54 48 45 41 44
DEWPT 37 37 38 38 37 39 43 44 44 44 44 46 46 45 43 40 36 35 35
MIN/MAX RH 73 32 82 62 79
RH 65 73 68 45 34 31 48 62 69 77 83 77 72 62 66 74 70 79 70
WIND DIR N NE NE E SW SW S SW N N N N NE NE E NW NW NW NW
WIND SPD 4 3 2 3 5 8 4 3 3 4 5 5 6 6 3 4 5 5 5
CLOUDS SC B1 B1 B1 B1 B1 B2 B2 OV OV OV OV OV B2 B1 B1 SC FW FW
CLOUDS(%) 27 68 65 62 52 59 78 81 92 92 91 93 92 85 66 51 29 19 7
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 50 70 30
RAIN SHWRS SC SC NM NM NM NM SC SC
MIX HGT <1 <1 <1 3 5 6 <1 <1 <1 <1 1 2 2 2 <1
T WIND DIR N N NE SE SW SW SW SW N N N N N NE SW
T WIND SPD 9 4 9 4 8 13 8 2 13 18 14 12 6 3 4
DISPERSION VP VP VP VP VP VP VP VP PR PR
ADI 4 2 10 19 53 64 5 1 6 12 18 25 16 9 2
MAX LVORI 3 3 3 2 1 1 2 3 3 4 3 3 3 3 3
STABILITY F F B B A C E F F E C C C B F
CEILING 16600 12300 5200 10100 6700 300 6100 None
STA PRES 29.27 29.28 29.19 29.21 29.26 29.28 29.21
Date 05/03Mon 05/04/26Tue 05/05/26Wed 05/06/26Thu 05/07/26
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 41 75 52 80 59 80 59 77
TEMP 63 60 45 46 73 70 57 55 78 74 63 60 76 75 64 61 75 67
DEWPT 32 34 36 38 41 44 46 47 47 48 53 56 56 55 57 57 52 44
RH 31 37 70 73 31 39 67 74 33 40 70 87 50 50 78 87 45 43
WIND SPD <15 <15 <15 <15 <15 <15 15> <15 <15
AVG CLOUDS FW CL CL CL CL FW FW FW FW FW B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 5 0 0 0 5 10 40 50 40
RAIN SHWRS IS SC SC SC SC SC
TSTMS IS 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