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St. Francis National Forest Fire Weather Point Forecast Matrix
ARZ049-091000-
MARIANNA NFDRS SITE-LEE AR
34.76N 90.72W ELEV. 253 FT
300 PM CST SUN NOV 8 2009
DATE 11/08/09 MON 11/09/09 TUE 11/10/09 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
CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
MIN/MAX 55 70 54 69 50
TEMP 72 69 62 59 57 56 61 68 69 67 62 60 57 55 61 68 68 64 61 58 55 51
DEWPT 51 55 54 54 54 55 54 54 54 55 54 54 53 53 52 51 50 50 48 47 45 43
MAX/MIN RH 96 59 93 52 74
RH 46 61 77 83 89 96 78 63 59 65 76 80 86 93 72 55 53 61 64 66 69 74
WIND DIR SE E SE SE E E E E E NE NE NE N N N N N N N N N N
WIND SPD 5 3 4 4 4 4 5 8 9 9 8 6 9 11 10 9 10 10 10 10 10 10
CLOUDS B1 B1 B1 B2 B2 B2 B2 B2 B2 OV OV OV OV B1 B1 B1 B1 SC SC SC SC FW
CLOUDS(%) 55 62 67 71 76 75 75 75 75 90 90 90 90 64 64 64 64 30 30 30 30 10
POP 12HR 5 10 20 20 5
QPF 12HR 0 0 0.02 0.02 0
RAIN S S S S S S S S
MIXHGT M AGL 0 0 522 651 436 456 824 1201 336 397
MIXHGT FT AGL 0 0 1714 2137 1430 1496 2702 3941 1103 1302
MIXHGT M MSL 73 62 600 729 514 534 902 1279 414 475
MIXHGT FT MSL 238 204 1970 2393 1686 1752 2958 4197 1359 1558
TRANSWIND DIR SE E SE E E E NE NE N N
TWIND SPD MS 3 2 4 2 7 9 12 11 9 11
TWIND SPD MPH 6 5 9 5 16 21 27 26 20 25
VENT INDEX 381 2187 4272 15348 4650
CATEGORY DAY 1 2 3 4 3
500M MIXHGT T 72 73 74 73 69 63 63 63 62 57
500M TWND DIR SE SE SE E E E NE NE N N
500M TWND M/S 9 10 6 4 11 11 13 10 12 12
500M TWND MPH 21 23 14 10 26 25 29 24 28 28
DISPERSION 5 5 14 13 24 41 67 79 19 47
LASI 4 4 4 4 3 3 3 3 3 3
STABILITY C E E C C D D C C E
STAG INDEX 2 0 0 0 0
DATE 11/11/09 THU 11/12/09 FRI 11/13/09 SAT 11/14/09 SUN 11/15/09
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
MAX/MIN 65 42 67 49 68 50 68 53 69
TEMP 65 59 51 43 62 60 52 50 65 62 56 51 64 63 58 54 67 65
DEWPT 41 40 39 42 44 45 45 47 49 53 53 51 59 59 58 54 50 48
MIN/MAX RH 42 97 45 93 55 100 76 100 49
RH 43 50 64 96 52 59 79 92 56 73 90 100 86 89100 100 54 53
WIND DIR N N NE E S S S S S
WIND SPD 9 4 3 3 4 5 9 9 10
AVG CLOUDS FW FW CL CL CL CL FW FW FW FW SC SC B1 B1 B1 B1 B2 B2
POP 12HR 0 0 0 0 5 10 10 20 30
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT
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 SPD (MPH)......................20 FT. WIND SPEED
WIND CHILL (F)......................WIND CHILL TEMPERATURE
HEAT INDEX (F)......................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
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...
IS.............ISOLATED
SC.............SCATTERED
NM.............NUMEROUS
O..............OCCASIONAL
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
WD.............WIDESPREAD
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
+PF............PATCHY DENSE FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
MIXING HGT M (AGL)..................MIXING HEIGHT IN METERS
MIXING HGT FT (AGL).................MIXING HEIGHT IN FEET
TRANSWIND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION
TWIND SPD MS (M/S)..................TRANSPORT WIND SPEED IN METERS PER SECOND
TWIND SPD MPH (MPH).................TRANSPORT WIND SPEED IN MILES PER HOUR
VENT INDEX (M2/S)...................VENT INDEX IN METERS SQUARED PER SECOND
CATEGORY DAY........................CATEGORY DAY BASED ON VENT INDEX
EXAMPLE: 1 = <2000; 2 = >=2000 AND <4000; 3 = >=4000 AND <8000;
4 = >=8000 AND <16000; 5 = >=16000
500M MIXHGT T (F)...................SURFACE TEMPERATURE NEEDED TO CREATE MIXING
UP TO 500 METERS ABOVE THE GROUND
500M TWND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION AT 500 METERS AGL
500M TWND M/S.......................TRANSPORT WIND AT 500 METERS AGL IN M/S
500M TWND MPH.......................TRANSPORT WIND AT 500 METERS AGL IN MPH
LASI (SAME AS HAINES INDEX).........LOWER ATMOSPHERIC SEVERITY INDEX
MEASURES FIRE GROWTH POTENTIAL
EXAMPLE: 1-3 = VERY LOW; 4 = LOW; 5 = MODERATE; 6 = HIGH
STABILITY...........................STABILITY CLASS
EXAMPLE: A = VERY UNSTABLE; B = MODERATELY UNSTABLE; C = SLIGHTLY UNSTABLE
D = NEUTRAL; E = SLIGHTLY STABLE; F = MODERATELY STABLE
G = VERY STABLE
STAG INDEX..........................STAGNATION INDEX
EXAMPLE: 0 = WINDS >= 10 MPH; 1 = WINDS <= 10 MPH WITH RAIN
2 = DRY WITH DECENT WINDS
3 = DRY WITH LIGHT WINDS AND STAGNATE CONDITIONS
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
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