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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed May 21 2025

NCZ003-220800-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
231 AM EDT Wed May 21 2025

Date           05/20/25      Wed 05/21/25            Thu 05/22/25            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          82          56          74          51
TEMP                      65 65 74 80 80 71 64 59 56 59 68 72 74 68 59 53 51 53
DEWPT                     62 63 65 61 57 54 51 49 49 50 49 48 47 46 46 45 44 44
MIN/MAX RH                   97          45          78          39          77
RH                        90 93 74 52 45 55 63 69 77 72 51 42 38 45 62 74 77 71
WIND DIR                   S  W  W  W  W  W  W  W  W  W  W  W  W  W NW  W NW NW
WIND SPD                   3  4  5  8 10 10  9  8  8  9 10 11 11 11 10  8  8  9
WIND GUST                             20                23 24 24               
CLOUDS                    OV B2 SC SC SC CL CL CL FW SC SC FW FW FW FW FW FW FW
CLOUDS(%)                 97 71 49 32 31  4  3  5  9 28 26 15 22 21 11 12  7 11
VSBY                       7  8 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                     70          20           0          20          10
RAIN SHWRS                SC IS                            IS IS               
TSTMS                     IS                               IS IS               
MIX HGT                   <1 <1  4  6  5 <1 <1 <1 <1  2  6  7  7 <1            
T WIND DIR                 E  S  W  W  W  W  W  W  W  W  W  W  W SW            
T WIND SPD                 2  1 11 17 19 11  5  5  3  6 19 23 23  6            
DISPERSION                VP             FR PR PR PR             FR FR PR PR   
ADI                        1  1 54118113  8  4  4  2 17125111110  5            
MAX LVORI                  8  8  3  1  1  3  3  3  4  3  1  1  1  2            
STABILITY                  F  C  A  B  B  E  E  E  E  B  B  C  C  E            
CEILING                     500  None  None  None  None  None  None  None      
STA PRES                  28.72 28.69 28.69 28.77 28.81 28.84 28.78            


Date           05/23Sat 05/24/25Sun 05/25/25Mon 05/26/25Tue 05/27/25
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       68      48      72      52      71      57      73      58      72
TEMP          65 62 49 51 69 67 55 55 69 67 59 59 71 69 62 58 70 68
DEWPT         40 39 39 42 44 46 45 47 53 55 53 54 57 57 57 58 60 57
RH            40 43 68 71 40 47 69 74 57 65 80 83 61 66 84100 71 68
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B1
POP 12HR            5       0       5      20      40      40      50      60      50
RAIN SHWRS                         IS SC SC SC SC SC SC SC NM 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