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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 PM EDT Tue May 19 2026

NCZ003-200800-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
601 PM EDT Tue May 19 2026

Date           05/19/26      Wed 05/20/26            Thu 05/21/26            Fri
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                 63          91          63          78          55
TEMP             84 73 70 65 68 86 89 88 81 72 68 64 67 76 76 71 68 61 58 56 56
DEWPT            57 55 55 54 56 61 59 60 62 62 62 61 63 66 66 68 66 61 58 56 56
MIN/MAX RH                   70          36          93          67         100
RH               40 53 59 68 65 43 37 39 53 71 81 90 87 71 71 90 93100100100100
WIND DIR          S SW  N  N  N  W  S SW  W NW  N  N  N  E SE NE NE  E  E  E  E
WIND SPD          2  1  0  0  0  1  3  4  1  1  0  0  0  2  4  4  3  3  1  1  1
CLOUDS           B1 B2 SC FW FW FW B1 B1 B2 B1 B1 B1 B1 B1 OV OV OV OV B2 B2 B2
CLOUDS(%)        51 77 41 22 12  8 51 57 73 64 61 51 61 62 96 96 94 94 87 87 83
VSBY             10 10 10 10 10 10 10 10 10 10  9  7  9 10 10  9  3            
POP 12HR                      0          40          30          90          90
RAIN SHWRS                         SC SC IS SC       SC SC  O  O  O  O  O  O SC
TSTMS                              SC SC IS             IS SC SC IS            
MIX HGT          <1 <1 <1 <1 <1  5  8  6 <1 <1 <1 <1  1  3  4  2 <1            
T WIND DIR       SW SW  W NW NW  W SW  S SW NW  N  N  E  E  E  E NE            
T WIND SPD       10  5  5  3  3  8  8 10  5  3  4  3  6  6  6 10 12            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               5  3  3  2  3 52 77 78  3  2  2  2  9 26 27 23  6            
MAX LVORI         2  2  3  3  3  1  1  1  2  3  5  7  5  3  3  4  6            
STABILITY         F  F  F  G  A  A  A  A  F  F  F  F  B  B  C  C  F            
CEILING              None  None  None 16600 14100  None   600  1300   600      
STA PRES            28.26 28.25 28.24 28.16 28.18 28.19 28.23 28.20            


Date           05/22Sat 05/23/26Sun 05/24/26Mon 05/25/26Tue 05/26/26
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      55      75      59      79      59      80      60      81
TEMP          62 67 61 59 70 72 64 63 77 74 65 64 77 74 66 64 78 75
DEWPT         62 63 59 59 67 68 62 63 70 70 63 63 70 70 64 64 70 70
RH           100 87 93100 90 87 93100 79 87 93 97 79 87 93100 76 84
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B1 B2 B2
POP 12HR           50      80      70      50      80      60      80      50      70
RAIN SHWRS    SC SC  O NM NM SC SC SC SC  O NM SC SC  O SC IS SC NM
TSTMS            SC 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