User:Pilover819/12262007
 | |
| Duration | Unknown – Unknown |
|---|---|
| Peak intensity | Winds not specified; |
Here's how the potential storm (12/29~31/2007) started and ended.
From the NHC Tropical Weather Discussion:
A 1017 MB LOW PRESSURE CENTER IS NEAR 28N42W.
A 1014 MB LOW PRESSURE CENTER IS NEAR 28N40W.
CUT-OFF LOW HAS DEVELOPED ALONG THE TROUGH AXIS NEAR 27N40W.
AN OCCLUDING LOW IS AT 28N41W WITH AN ASSOCIATED FRONTAL BOUNDARY EXTENDING EAST AND SOUTH OF ITS CENTER.
...AND A 1012 MB LOW PRESSURE CENTER IS NEAR 26N41W ON THE 27/0000 UTC SURFACE MAP ANALYSIS.
...AND A 1012 MB LOW PRESSURE CENTER IS NEAR 26N39W ON THE 27/0600 UTC SURFACE MAP ANALYSIS.
A 1014 MB SURFACE LOW CONTINUES TO MEANDER NEAR 26N38W
...DUE TO A VERTICALLY STACKED NEARLY STATIONARY 1013 MB LOW NEAR 26N38W.
...AND A 1012 MB LOW PRESSURE CENTER IS NEAR 26N38W ON THE 28/0000 UTC SURFACE MAP ANALYSIS.
...AND A 1009 MB LOW PRESSURE CENTER IS NEAR 26N37W ON THE 28/0600 UTC SURFACE MAP ANALYSIS.
...A 1011 MB LOW CONTINUES TO MEANDER NEAR 26N38W
OF INTEREST IS THE DEEP CYCLONE CENTERED NEAR 26N38W. THIS SYSTEM HAS REMAINED STATIONARY FOR A COUPLE OF DAYS AND ORGANIZED CONVECTION IS STARTING TO DEVELOP. QUIKSCAT WINDS SUGGEST THAT THERE ARE SOME GALE FORCE WINDS ALONG THE NORTHERN SEMI-CIRCLE OF THE SYSTEM...BUT THERE MAY BE SOME RAIN CONTAMINATION IN THE OBSERVED WINDS.
DEEP LAYER CYCLONIC CIRCULATION CENTER REMAINS IN THE CENTRAL ATLANTIC OCEAN NEAR 26N38W ON WATER VAPOR IMAGERY...AND A 1008 MB GALE LOW PRESSURE CENTER IS NEAR 26N38W.
DEEP LAYER CYCLONIC CIRCULATION CENTER REMAINS IN THE CENTRAL ATLANTIC OCEAN NEAR 27N38W ON WATER VAPOR IMAGERY...AND A 1008 MB GALE LOW PRESSURE CENTER IS NEAR 26N38W.
...SPECIAL FEATURE...
INTERESTING FEATURE FOR THE DAY IS THE DEEP CYCLONE CENTERED NEAR 27N38W. THIS SYSTEM HAS REMAINED STATIONARY FOR A COUPLE OF DAYS AND ORGANIZED CONVECTION IS DEVELOPING IN A COUPLE OF BANDS LOCATED TO THE EAST OF THE CENTER. QUIKSCAT WINDS SUGGEST THAT THERE ARE SOME GALE FORCE WINDS ALONG THE NORTHERN SEMI-CIRCLE AND SE QUADRANT OF THE SYSTEM...THAT SEEMS TO BE ACQUIRING SOME SUBTROPICAL CHARACTERISTICS. THE MOST COMMON TYPE OF SUBTROPICAL CYCLONE IS AN UPPER-LEVEL COLD LOW WITH CIRCULATION EXTENDING TO THE SURFACE...AS IN THIS CASE. ACCORDING TO THE UW-CIMSS PRODUCTS...VERTICAL SHEAR ON THE SYSTEM IS RELATIVELY WEAK...BUT THIS LOW-MODERATE SHEAR ENVIRONMENT MAY ONLY LAST FOR ANOTHER DAY OR SO BEFORE STRONG UPPER WESTERLIES IMPACT THE SYSTEM WITH THE APPROACH OF A VIGOROUS SHORT-WAVE TROUGH. THE CYCLONE SHOULD MEANDER IN PLACE FOR THE NEXT 24-36 HOURS OR SO. SOME OF THE MODEL GUIDANCES MOVE THIS SYSTEM TO THE SW ACROSS THE OPEN OCEAN WATERS. THIS SYSTEM COULD BECOME A SUBTROPICAL CYCLONE AT ANY TIME.
...SPECIAL FEATURE...
THE WELL-DEFINED NON-BAROCLINIC CYCLONE CONTINUES IN THE NORTHEAST ATLANTIC NEAR 28N38W. THE SYSTEM HAS BEEN DRIFTING NORTH-NORTHEASTWARD DURING THE DAY AND HAS DEVELOPED PRONOUNCED ANTICYCLONIC OUTFLOW IN THE UPPER TROP. DESPITE WATER TEMPERATURES NEAR THE CYCLONE OF AROUND 22-23C...MODERATE CONVECTION HAS BEEN PERSISTENT ON THE NORTHEAST SEMICIRCLE. SATELLITE CLASSIFICATIONS SUGGEST THAT THE SYSTEM COULD BE A MINIMAL SUBTROPICAL STORM. QUIKSCAT WINDS...WHILE HAVING THE USUAL AMBIGUITY ISSUES IN RAINY CONDITIONS...INDICATE THAT GALE FORCE WINDS LIKELY ARE OCCURRING IN THE NORTHERN SEMICIRCLE. TROPOSPHERIC VERTICAL SHEAR IS ABOUT 20 KT AS THE STRONGEST UPPER TROP WESTERLIES ARE BYPASSING THE CYCLONE TO THE NORTH AND THE SOUTH. THE CYCLONE SHOULD MEANDER OVER THE NEXT 36 HOURS BEFORE BEING PUSHED OFF TOWARD THE WEST OR SOUTHWEST BY A DEVELOPING MID-OCEAN RIDGE ON MONDAY. GIVEN THAT THE VERTICAL SHEAR SHOULD INCREASE SUBSTANTIALLY TOMORROW...TONIGHT MAY BE THE LAST OPPORTUNITY FOR THIS SYSTEM TO GAIN A BIT MORE ORGANIZATION TO ITS CONVECTION AND MAKE THE TRANSITION TO A NAMED SUBTROPICAL STORM.
...SPECIAL FEATURE...
THE EASTERN ATLANTIC DEEP LAYER CYCLONIC CIRCULATION CENTER IS MORE OR LESS IN THE SAME SPOT THAT IT HAS BEEN RESIDING FOR THE LAST WEEK OR SO. THE SUBTROPICAL CLASSIFICATION NUMBER IS S-T 2.5. A HURRICANE FORECASTER WROTE A DSAAT BULLETIN AT 29/1900 UTC...THIS FEATURE THAT IS ABOUT 950 MILES SOUTHWEST OF THE AZORES GRADUALLY HAS BEEN ACQUIRING SOME SUBTROPICAL CHARACTERISTICS DURING THE PAST DAY OR SO. IT HAS BEEN PRODUCING GALE-FORCE WINDS...MAINLY TO THE NORTH AND EAST OF ITS CIRCULATION CENTER. IT IS POSSIBLE THAT IT MAY BECOME A SUBTROPICAL STORM LATER TODAY AS IT REMAINS NEARLY STATIONARY. FURTHER TROPICAL DISTURBANCE STATEMENTS WILL BE ISSUED AS NECESSARY. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE... UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC. SCATTERED MODERATE TO STRONG SHOWERS AND THUNDERSTORMS ARE FROM 28.5N TO 30N BETWEEN 33W AND 37W. A THIN LINE OF CLOUDS AND POSSIBLE SHOWERS STILL IS ALONG 25N34W 20N37W 18N40W 13N50W 10N57W 9N60W AND NOT QUITE TO THE COAST OF EXTREME EASTERN/ NORTHEASTERN VENEZUELA AS IT WAS 16 HOURS AGO. PATCHES OF MULTILAYERED CLOUDS AND POSSIBLE SHOWERS ARE ASSOCIATED WITH AN ALREADY-DISSIPATED ATLANTIC OCEAN TROUGH...ORIGINATING FROM THE DEEP LAYER LOW PRESSURE CENTER WITHIN 180 NM TO 240 NM NORTH OF 17N46W 12N57W 11N65W 13N71W. THE CLOUDS/POSSIBLE PRECIPITATION ALONG THE WESTERN END OF THIS LINE ARE IN THE CARIBBEAN SEA. THE CYCLONE SHOULD MEANDER DURING THE NEXT 36 HOURS BEFORE BEING PUSHED TOWARD THE WEST OR SOUTHWEST BY A DEVELOPING MIDDLE-OCEAN RIDGE ON MONDAY. THE LATE NIGHT AND EARLY MORNING HOURS OF TODAY MAY BE THE LAST OPPORTUNITY FOR THIS SYSTEM TO GAIN A BIT MORE ORGANIZATION TO ITS PRECIPITATION PATTERN AND MAKE THE TRANSITION TO A NAMED SUBTROPICAL STORM GIVEN THAT THE VERTICAL SHEAR IS FORECAST TO INCREASE SUBSTANTIALLY LATER TODAY.
...SPECIAL FEATURE...
THE EASTERN ATLANTIC DEEP LAYER CYCLONIC CIRCULATION CENTER IS MORE OR LESS IN THE SAME SPOT THAT IT HAS BEEN RESIDING FOR THE LAST WEEK OR SO. THE SUBTROPICAL CLASSIFICATION NUMBER IS S-T 2.5. A HURRICANE FORECASTER WROTE A DSAAT BULLETIN AT 29/1900 UTC...THIS FEATURE THAT IS ABOUT 950 MILES SOUTHWEST OF THE AZORES GRADUALLY HAS BEEN ACQUIRING SOME SUBTROPICAL CHARACTERISTICS DURING THE PAST DAY OR SO. IT HAS BEEN PRODUCING GALE-FORCE WINDS...MAINLY TO THE NORTH AND EAST OF ITS CIRCULATION CENTER. IT IS POSSIBLE THAT IT MAY BECOME A SUBTROPICAL STORM LATER TODAY AS IT REMAINS NEARLY STATIONARY. FURTHER TROPICAL DISTURBANCE STATEMENTS WILL BE ISSUED AS NECESSARY. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE... UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC. THE 1006 MB GALE LOW PRESSURE CENTER IS NEAR 28N36W. SCATTERED MODERATE TO STRONG SHOWERS AND THUNDERSTORMS ARE FROM 28N TO 32N BETWEEN 32W AND 36W. A THIN LINE OF CLOUDS AND POSSIBLE SHOWERS STILL IS ALONG 25N34W 20N37W 18N40W 13N50W 10N57W AND TO THE COAST OF EXTREME EASTERN/NORTHEASTERN VENEZUELA NEAR 9N61W AS IT WAS 24 HOURS AGO. PATCHES OF MULTILAYERED CLOUDS AND POSSIBLE SHOWERS ARE ASSOCIATED WITH AN ALREADY-DISSIPATED ATLANTIC OCEAN TROUGH...ORIGINATING FROM THE DEEP LAYER LOW PRESSURE CENTER WITHIN 180 NM TO 240 NM NORTH OF 18N44W 15N50W 11N60W 11N70W 13N74W. THE CLOUDS/ POSSIBLE PRECIPITATION ALONG THE WESTERN HALF OF THIS LINE ARE IN THE CARIBBEAN SEA. THE CYCLONE SHOULD MEANDER DURING THE NEXT 36 HOURS BEFORE BEING PUSHED TOWARD THE WEST OR SOUTHWEST BY A DEVELOPING MIDDLE-OCEAN RIDGE ON MONDAY. TODAY MAY BE THE LAST OPPORTUNITY FOR THIS SYSTEM TO GAIN A BIT MORE ORGANIZATION TO ITS PRECIPITATION PATTERN AND MAKE THE TRANSITION TO A NAMED SUBTROPICAL STORM GIVEN THAT THE VERTICAL SHEAR IS FORECAST TO INCREASE SUBSTANTIALLY LATER TODAY.
...SPECIAL FEATURE... SURFACE LOW PRES...1008 MB..IS CENTERED OVER THE EASTERN ATLC ABOUT 900 MILES SSW OF THE AZORES. SATELLITE IMAGERY INDICATES THAT THIS SYSTEM IS NOW INTERACTING WITH A COLD FRONT TO ITS N AND SHOWER AND TSTM ACTIVITY HAS BECOME LESS ORGANIZED THAN YESTERDAY. HOWEVER...THIS SYSTEM CONTINUES TO PRODUCE GALE-FORCE WINDS...MAINLY TO THE N AND SLIGHTLY TO THE S OF THE CENTER...AND IT STILL COULD BECOME A SUBTROPICAL STORM LATER TODAY OR TOMORROW AS IT MOVES SLOWLY DURING THE NEXT COUPLE OF DAYS. MOST OF THE CONVECTION IS TO THE N OF THE LOW CENTER FROM 29N-32N BETWEEN 31W-36W...WITH A LINE OF SHOWERS AND POSSIBLE ISOLATED TSTMS FROM 28N34W 28N34W.
...SPECIAL FEATURE... A GALE-FORCE 1008 MB CYCLONE IS PRESENT AT 27N35W OR ABOUT 750 NM SSW OF THE AZORES. THE SYSTEM HAS LOST SOME OF ITS CONVECTIVE ORGANIZATION DURING THE DAY WITH DEEP CONVECTION RESTRICTED TO THE NORTHERN QUADRANT. AN UPPER LEVEL TROUGH AXIS IS NOW LOCATED JUST WEST OF THE SURFACE CYCLONE...WHICH IS THUS EXPERIENCING 30-40 KT OF VERTICAL SHEAR ACCORDING TO THE CIMSS ANALYSES. ADDITIONALLY...A COLD FRONTAL BOUNDARY TO THE NORTH OF THE CYCLONE IS INTERACTING WITH THE CYCLONE...WHICH IS SHOWN AS INCREASED BAROCLINICITY OF THE SYSTEM AS ANALYZED BY THE FSU CYCLONE PHASE SPACE DIAGRAMS. THE HIGHER SHEAR...INCREASED BAROCLINICITY...ALONG WITH THE RATHER COOL 19C SSTS SUGGEST THAT THE SYSTEM HAS LITTLE CHANCE AT THIS POINT TO BECOME A NAMED SUBTROPICAL STORM. THE CYCLONE WILL BEGIN MOVING TO THE SOUTHWEST IN THE NEXT COUPLE OF DAYS AS IT WEAKENS.
...SPECIAL FEATURE... A LARGE LOW PRES SYSTEM...PRODUCING GALE FORCE WINDS...CONTINUES TO SPIN CENTERED NEAR 27N35W. A FORTUITOUS REPORT FROM DRIFTING BUOY 62901...LOCATED VERY NEAR THE LOW-LEVEL CENTER...REVEALED A PRES OF 1004.6 MB AT 00Z SO ACCORDINGLY THE MIN PRES WAS DROPPED TO 1004 MB. THIS LOW HAS BEEN MEANDERING ABOUT FOR THE PAST SEVERAL DAYS BUT NOW APPEARS TO BE ON A SW HEADING AS THE UPPER SHORTWAVE IS PASSING TO THE NE ALLOWING A BUILDING MID-LEVEL RIDGE TO BE THE MAIN STEERING ELEMENT. THE LOW IS A LITTLE MORE ASYMMETRIC AND ELONGATED TONIGHT WITH CONVECTION CONFINED TO THE NW QUADRANT N OF 27N BETWEEN 35W-39W AND IN A NARROW BANDED STRUCTURE TO THE E OF THE CENTER FROM 24N-29N BETWEEN 30W-32W. THE STRONGEST WINDS...TO 40 KT...ARE LOCATED IN THE NW SEMICIRCLE WHERE THE PRES GRADIENT IS TIGHTEST DUE TO A 1029 MB HIGH CENTERED NEAR 33N49W. NUMERICAL MODEL GUIDANCE IS IN GOOD AGREEMENT IN SHOWING THIS SYSTEM MOVING OFF TO THE SW AND WEAKENING. THIS LOW...OR WHAT EVER IS LEFT OF IT...WILL LIKELY GET PICKED UP AND ABSORBED BY A LARGE UPPER TROUGH LATER THIS WEEK.
...SPECIAL FEATURE... A LARGE LOW PRES SYSTEM IS LOCATED ABOUT 850 NM SW OF THE AZORES NEAR 26N36W. A FORTUITOUS REPORT FROM DRIFTING BUOY 62901 AT 00Z REPORTED A PRES OF 1004.6 MB VERY NEAR THE LOW-LEVEL CENTER...ACCORDINGLY THE MIN PRES WAS DROPPED TO 1004 MB. HOWEVER...THE OVERALL CLOUD PATTERN HAS DETERIORATED SINCE THAT TIME SO IT IS POSSIBLE THAT THE PRES MAY HAVE INCREASED SLIGHTLY. EARLIER THIS MORNING...CONVECTION WAS MOST ORGANIZED IN THE NW QUADRANT AND WAS GENERALLY MODERATE IN NATURE...CLOUD TOPS NEAR -60 C...ACROSS THE QUADRANT. THIS CONVECTION HAS NOW ROTATED TO THE SW QUADRANT AND HAS GENERALLY DECREASED IN AERIAL COVERAGE AS MODERATE CONVECTION IS CONFINED FROM 25N-27N BETWEEN 37W-39W. AN ASCAT PASS AROUND 00Z REVEALED A FEW 45 KT WIND VECTORS NEAR THE SWATH EDGE IN THE NW SEMICIRCLE...WHERE THE PRESSURE GRADIENT IS TIGHTEST DUE TO HIGH PRES CENTERED TO THE NW. AT ABOUT THE SAME TIME...A VERY CONVENIENT JASON ALTIMETER PASS CROSSED THE CIRCULATION REPORTING MAX SEAS NEAR 26 FT AND A 300 NM 12 FT SEA RADII N OF THE CENTER. MORE RECENTLY...A QSCAT PASS AROUND 0830Z SHOWED A FEW BELIEVABLE 40 KT WIND VECTORS W OF THE CENTER.
AFTER MEANDERING ABOUT FOR THE PAST SEVERAL DAYS THE SYSTEM APPEARS TO BE ON A CONSISTENT SW HEADING AS AN UPPER SHORTWAVE HAS PASSED TO THE NE ALLOWING A BUILDING MID-LEVEL RIDGE TO BE THE MAIN STEERING ELEMENT. NUMERICAL MODEL GUIDANCE IS IN GOOD AGREEMENT IN CONTINUING THIS MOTION AS IT WEAKENS TO AN OPEN TROUGH. THIS LOW...OR WHAT EVER IS LEFT OF IT...WILL LIKELY GET PICKED UP AND ABSORBED BY A LARGE UPPER TROUGH AND FRONTAL ZONE LATER THIS WEEK.
...SPECIAL FEATURE... A 1006 MB LOW PRES LOCATED NEAR 26N36W OR ABOUT 1000 NM S-SW OF THE AZORES. THE LOW IS PRODUCING A LARGE AREA OF GALE FORCE WINDS OVER THE N SEMICIRCLE...DUE TO A STRONG PRES GRADIENT BETWEEN THE LOW AND HIGHER PRES TO THE NW. HOWEVER THE CONVECTIVE ACTIVITY HAS BECOME DISORGANIZED AND HAS MOVED FAR FROM THE LOW CENTER...ABOUT 100 NM SW OF THE CENTER...SOME SCATTERED SHOWERS REMAIN NEAR THE LOW CENTER. THIS LOW IS NO LONGER EXPECTED TO BECOME A TROPICAL OR SUBTROPICAL SYSTEM.
THE 1008 MB CYCLONE THAT ATTEMPTED TO BECOME A SUBTROPICAL STORM IS CENTERED NEAR 26N37W. WHILE GALE FORCE WINDS LIKELY STILL WERE IN PLACE IN THE NORTHERN SEMI-CIRCLE AS INDICATED BY THE 2058 UTC QUIKSCAT PASS...THE SYSTEM IS FILLING AND WINDS ARE LIKELY TO WEAKEN TO BELOW GALE FORCE LATE TOMORROW. THE CYCLONE SHOULD MOVE WEST-SOUTHWESTWARD OVER THE NEXT COUPLE OF DAYS AS A REMNANT LOW.
THE WEAKENING 1009 MB LOW PRES SYSTEM THAT ATTEMPTED TO BECOME A SUBTROPICAL STORM IS CENTERED NEAR 25N38W. GALE FORCE WINDS ARE LIKELY STILL OCCURRING IN THE NW SEMICIRCLE AS INDICATED BY A 2058 UTC QUIKSCAT PASS. HOWEVER...THIS GALE EVENT IS FORECAST TO COME TO AN END IN ABOUT 24-30 HOURS AS THE LOW CONTINUES TO FILL. CONVECTION IS CONFINED WITHIN 150 NM IN THE NE QUADRANT AND EVEN THERE CLOUD TOPS ARE MAINLY WARMER THAN -60 C. NUMERICAL MODEL GUIDANCE SHOWS A CONTINUED WSW MOTION...STEERED BY A LOW-MID LEVEL RIDGE...UNTIL DISSIPATION IN A COUPLE OF DAYS OR SOONER.
THE WEAKENING 1009 MB LOW PRES SYSTEM THAT ATTEMPTED TO BECOME A SUBTROPICAL STORM IS CENTERED NEAR 24N39W. GALE FORCE WINDS ARE STILL OCCURRING IN THE N SEMICIRCLE AS INDICATED BY A 0808 UTC ASCAT PASS. HOWEVER...THIS GALE EVENT IS FORECAST TO COME TO AN END IN ABOUT 18-24 HOURS AS THE LOW CONTINUES TO FILL. CONVECTION IS CONFINED WITHIN 150 NM PRIMARILY E OF THE CENTER BUT EVEN THERE CLOUD TOPS ARE MAINLY WARMER THAN -60 C. NUMERICAL MODEL GUIDANCE SHOWS A CONTINUED WSW MOTION...STEERED BY A LOW-MID LEVEL RIDGE...UNTIL DISSIPATION IN A COUPLE OF DAYS OR SOONER.
A WEAKENING 1012 MB LOW IS CENTERED OVER THE CENTRAL ATLANTIC NEAR 23N40W. GALE FORCE WINDS ARE STILL OCCURRING IN THE N SEMICIRCLE. THIS GALE EVENT IS FORECAST TO COME TO AN END IN ABOUT 18 HOURS AS THE LOW CONTINUES TO FILL. NUMERICAL MODEL GUIDANCE SHOWS A CONTINUED WSW MOTION.
A SECOND FEATURE OF INTEREST IS A SURFACE LOW OF 1012 MB NEAR 23N42W WHICH HAS GALES IN ITS NORTHERN SEMICIRCLE. GALES IN THIS LOW SHOULD SUBSIDE TONIGHT AS THE SYSTEM MOVES WEST-SOUTHWESTWARD.
THE LOW PRESSURE SYSTEM THAT THREATENED TO BECOME A NAMED SUBTROPICAL STORM DAYS AGO IS MOVING W ANALYZED 1012 MB NEAR 22N45W...BUT APPEARS TO BE OPENING INTO A TROUGH. WHILE RECENT SHIP AND SCATTEROMETER DATA SUGGESTS THAT WINDS TO GALE FORCE ARE STILL OCCURRING WITHIN 240 NM N SEMICIRCLE IT IS EXPECTED TO FALL BELOW CRITERIA VERY SHORTLY.
- (2008.1.2 1200 UTC)
THE LOW PRESSURE SYSTEM THAT THREATENED TO BECOME A NAMED SUBTROPICAL STORM DAYS AGO CONTINUES TO WEAKEN AS IT MOVES W STEERED BY A LOW-MID LEVEL RIDGE. SAT IMAGES SHOW A HIGHLY ELONGATED N-S SFC TROUGH AXIS ALONG 47W WITH A POSSIBLE LOW PRES MINIMUM AND ELONGATED CIRCULATION ALONG THE TROUGH NEAR 22N...BUT EVEN THIS APPEARS TO BE OPENING. GALES HAVE COME TO AN END BUT WINDS REMAIN STRONG NEAR THE TROUGH AXIS. THE SMALL PATCH OF CONVECTION DISCUSSED EARLIER HAS DIMINISHED LEAVING A COMPLETELY SHALLOW SYSTEM.
- (2008.1.2 1800 UTC)
THE LOW PRESSURE SYSTEM THAT THREATENED TO BECOME A NAMED SUBTROPICAL STORM DAYS AGO CONTINUES TO WEAKEN OVER THE OPEN OCEAN WATERS AS IT DRIFTS WWD. A SFC TROUGH EXTENDING N TO S ALONG 47W IS ATTACHED TO THE LOW. A SWIRL OF LOW CLOUDS IS ASSOCIATED WITH THIS FEATURE. WINDS HAVE DIMINISHED BELOW GALE FORCE WITH AN EARLIER QUIKSCAT PASS SHOWING 20 TO 25 KT ON THE N SEMICIRCLE. THIS LOW IS FORECAST TO DISSIPATE IN ABOUT 12-24 HOURS...LEAVING AN OPEN TROUGH IN THE AREA.
- (2008.1.3 0000 UTC)
THE LOW PRESSURE SYSTEM THAT THREATENED TO BECOME A NAMED SUBTROPICAL STORM DAYS AGO CONTINUES TO WEAKEN OVER THE OPEN OCEAN WATERS AS IT DRIFTS WESTWARD. THE LOW PRESSURE CENTER IS 1015 MB NEAR 22N50W...AND FORECAST TO DISSIPATE AFTER 24 HOURS.
- (2008.1.3 0600 UTC)
THE LOW PRES SYSTEM THAT ATTEMPTED TO BE SUBTROPICAL SEVERAL DAYS AGO IS STILL APPARENT ON SATELLITE IMAGERY BUT NOW AS A N-S OPEN TROUGH WITH NO CONVECTION. THIS WEAK FEATURE CONTINUES TO MOVE W AND WILL MERGE WITH THE STRONG FRONTAL ZONE WITHIN THE NEXT DAY OR SO.
- (2008.1.3 1200 UTC)
THE LOW PRES SYSTEM THAT ATTEMPTED TO BE SUBTROPICAL SEVERAL DAYS AGO IS STILL APPARENT ON SATELLITE IMAGERY BUT NOW AS A N-S OPEN TROUGH ALONG 53W/54W FROM 21N-30N WITH NO CONVECTION. THIS WEAK FEATURE CONTINUES TO MOVE W AND WILL MERGE WITH THE STRONG FRONTAL ZONE WITHIN THE NEXT DAY OR SO.
- 2008.1.3 1800 UTC- merges with cold front
COLD FRONT IS OVER THE W ATLANTIC ALONG 32N60W 20N70W.