EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE WAKEFIELD VA
410 PM EDT SUN AUG 19 2018
VAZ081-200900-
JAMES RIVER NWR RAWS-PRINCE GEORGE VA
37.25N 77.25W ELEV. 50 FT
410 PM EDT SUN AUG 19 2018
DATE 08/19/18 MON 08/20/18 TUE 08/21/18 WED
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 71 83 71 86 73
TEMP 82 78 74 73 72 73 79 82 82 77 74 73 72 74 81 85 84 80 76 75 74 76
DEWPT 71 73 72 71 70 71 71 71 71 71 71 71 71 71 71 72 72 72 73 73 72 71
MAX/MIN RH 97 67 97 65 97
RH 69 85 93 93 93 93 77 69 69 81 89 92 97 91 72 65 68 78 90 94 93 85
WIND DIR N NE E NE NE NE NE NE E E E E SE S S S S S S SW SW W
WIND DIR DEG 01 02 08 04 05 05 03 05 08 11 10 10 15 16 17 19 19 19 20 22 23 25
WIND SPD 3 3 4 2 3 4 3 3 4 3 3 3 1 3 5 6 6 8 4 3 3 4
CLOUDS B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B1 B1 SC SC
CLOUDS(%) 70 80 87 86 91 87 83 75 74 74 70 72 89 85 86 75 78 78 68 53 49 44
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 6 6 7 7 7 7 7
POP 12HR 40 40 30 60 40
QPF 12HR 0.16 0.18 0.01 0.28 0.12
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C C C C C C C S S C C C C L L C C S S
TSTMS C C C S C C S S L L C C
LAL 3 2 3 3 1 2 4 4 3 1
HAINES 4 4 3 3 3 3 3 3 3 4
MIX HGT 400 300 3400 3500 400 300 3900 3800 300 300
T WIND DIR E E E SE E SE SW S S SW
T WIND SPD 4 5 8 8 4 5 13 17 12 9
SMOKE DISP PR PR PR PR PR PR FR GD PR PR
ADI 3 8 24 23 2 9 43 57 10 8
MAX LVORI 7 7 5 5 7 8 5 4 6 7
STABILITY B D D B B D D B B F
CEILING 0 0 0 0 0 0 5400 7200 13800 6300
PRESSURE 29.84 29.87 29.92 29.90 29.92 29.89 29.86 29.77 29.72 29.70
DATE 08/22 THU 08/23/18 FRI 08/24/18 SAT 08/25/18 SUN 08/26/18
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 88 67 82 63 84 64 85 65 87
TEMP 86 78 71 70 80 74 67 67 82 76 68 68 83 76 69 69 85 78
DEWPT 71 69 65 61 62 60 56 59 61 63 60 63 66 67 66 66 70 69
MIN/MAX RH 57 83 49 82 47 90 53 100 57
RH 61 74 80 74 53 61 69 76 49 63 76 84 57 73 90 90 61 74
WIND DIR NW NW N N N NE NE N E E SE NE E SE E W S S
WIND SPD 6 3 3 5 4 3 1 3 3 3 2 3 4 3 2 2 3 2
AVG CLOUDS SC B1 SC SC SC SC FW FW FW FW FW FW FW SC SC SC SC SC
POP 12HR 30 20 10 5 5 5 10 10 20
RAIN SHWRS C S S S S
TSTMS C S S S S
$$
EXPERIMENTAL ONLY...THIS PRODUCT IS FOR PLANNING AND REVIEW PURPOSES ONLY AND
IS NOT TO BE SUBSTITUTED FOR AN OFFICIAL FIRE WEATHER SPOT
FORECAST.
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 HUMIDITY
RH(%)...............................RELATIVE HUMIDITY
WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION
WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
RELATIVE TO DUE NORTH.
EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
WIND SPD(MPH).......................20 FT. WIND SPEED
WIND GUST(MPH)......................20 FT. WIND GUST
WIND CHILL..........................WIND CHILL TEMPERATURE
HEAT INDX...........................HEAT INDEX
CLOUDS(CAT).........................CLOUD COVER CATEGORY
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE
VSBY................................VISIBILITY VALUE IN STATUTE MILES
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT
WEATHER...
TYPE...
RAIN...........RAIN
RAIN SHWRS.....RAIN SHOWERS
TSTMS..........THUNDERSTORMS
DRIZZLE........DRIZZLE
SNOW...........SNOW
SNOWSHWRS......SNOW SHOWERS
SLEET..........SLEET
FLURRIES.......FLURRIES
FRZG RAIN......FREEZING RAIN
FRZG DRZL......FREEZING DRIZZLE
COVERAGE...
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
O..............OCCASIONAL
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
AF.............VOLCANIC ASHFALL
LAL(CAT)............................LIGHTNING ACTIVITY LEVEL
HAINES(CAT).........................HAINES INDEX
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
SMOKE DISPERSION....................SMOKE DISPERSION CATEGORY
VALUES: VP = VERY POOR; PR = POOR; FR = FAIR; GD = GOOD
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
PRESSURE (INCHES MERCURY)...........STATION PRESSURE
MAX LVORI (INDEX)...................LOW VISIBILITY OCCURRENCE RISK INDEX
STABILITY (CAT).....................PASQUILL TURNER STABILITY
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
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 DIR............................20 FT. WIND DIRECTION
WIND SPD(MPH).......................20 FT. WIND SPEED
AVG CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS
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