Power Pacific system will continue to bring significant impacts for Pacific Northwest into northern California the remainder of the week. Dangerous coastal affects, heavy rain, flooding, strong winds, and higher elevation mountain snow continues. Meanwhile, a storm across the east is set to bring the first accumulating snow to many higher elevations of the Catskills into the central Appalachians. Read More >
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
410 PM EST Thu Nov 21 2024
MDZ021-220900-
Blackwater NWR RAWS-Dorchester MD
38.42N 76.00W Elev. 8 ft
410 PM EST Thu Nov 21 2024
Date 11/21/24 Fri 11/22/24 Sat 11/23/24 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
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX 35 48 38 56 41
TEMP 44 42 39 36 37 42 47 46 43 41 40 39 39 48 54 54 48 45 44 43 42
DEWPT 35 34 31 28 28 30 32 34 36 36 36 37 37 38 40 39 39 38 37 37 37
MAX/MIN RH 76 55 92 53 82
RH 70 73 72 72 71 62 56 63 76 82 85 92 92 68 58 57 72 77 76 79 81
WIND DIR W W W W W W W W W W NW NW NW NW W W W W W W W
WIND DIR DEG 28 27 27 27 26 25 25 25 26 27 30 31 30 31 29 29 29 29 28 28 28
WIND SPD 5 6 8 8 8 11 12 13 11 11 10 10 9 12 13 12 10 10 8 8 10
CLOUDS B1 SC SC SC FW B1 B2 B2 OV B2 B1 SC SC SC SC SC SC SC SC SC SC
CLOUDS(%) 66 40 27 29 25 54 80 86 93 77 61 49 37 39 40 37 34 31 27 29 31
VSBY 7 7 7 7 7 7 6 6 7 7 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 10 70 50 0 0
QPF 12HR 0 0.10 0.05 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN S C
RAIN SHWRS L L C C
LAL 1 1 1 1 1 1 1 1 1 1
HAINES 4 3 4 3 3 4 4 4 3 4
MIX HGT 800 1100 3800 3600 2100 2000 4300 3900 1000 700
T WIND DIR W W W W W NW NW W W W
T WIND SPD 11 18 18 25 25 25 23 24 13 10
SMOKE DISP PR PR GD GD FR FR GD GD PR PR
ADI 13 26 61 65 37 37 66 63 19 11
MAX LVORI 4 4 3 3 4 4 3 3 4 4
STABILITY E E D D D D D D E E
CEILING 5500 2400 6300 5000 1000 1700 23500 30000 20800 30000
PRESSURE 29.60 29.54 29.55 29.46 29.45 29.55 29.76 29.81 29.92 30.01
Date 11/24Mon 11/25/24Tue 11/26/24Wed 11/27/24Thu 11/28/24
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN 56 40 61 48 62 40 51 35 50
TEMP 54 47 43 41 59 54 51 49 60 50 44 41 50 42 38 36 48 41
DEWPT 37 40 39 39 43 46 45 47 42 36 32 31 31 34 32 33 34 37
MIN/MAX RH 50 92 52 93 44 70 48 86 55
RH 52 75 86 92 54 73 81 93 51 58 63 70 48 71 79 87 57 84
WIND DIR W W W SW SW S SW SW NW NW NW N W NW N N N N
WIND SPD 11 4 3 3 8 6 10 10 13 9 8 6 10 3 2 3 8 8
AVG CLOUDS SC FW FW FW SC SC B1 B1 B1 SC SC SC SC SC SC B1 B1 B1
POP 12HR 0 0 0 10 10 5 10 20 30
RAIN S S S C
$$
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