Tag Archives: Tropical Storm Lorenzo

Tropical Storm Lorenzo Churns over Central Atlantic

Tropical Storm Lorenzo was churning over the Central Atlantic Ocean on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Lorenzo was located at latitude 18.7°N and longitude 45.5°W which put the center about 1430 miles (2300 km) west of the Cabo Verde Islands.  Lorenzo was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1005 mb.

After strengthening on Monday night, Tropical Storm Lorenzo weakened on Tuesday.  An upper level low east of the Lesser Antilles was producing southerly winds that were blowing toward the top of Lorenzo’s circulation.  Those winds were causing strong vertical wind shear.  Lorenzo also moved into a region of drier air on Tuesday.  The strong vertical wind shear and drier air caused many of the thunderstorms in Tropical Storm Lorenzo to dissipate.  Thunderstorms were still occurring in bands in the southeastern part of Lorenzo’s circulation.  Bands in the other parts of Tropical Storm Lorenzo consisted primarily of showers and lower clouds.

The strongest winds were occurring in the eastern side of Tropical Storm Lorenzo.  Winds to tropical storm force extended out 60 miles (95 km) in the eastern half of Lorenzo’s circulation.  The winds in the western half of Tropical Storm Lorenzo were blowing at less than tropical storm force.

Tropical Storm Lorenzo will move through an environment unfavorable for intensification during the next 24 hours.  Lorenzo will move over water where the Sea Surface Temperatures are near 27°C.  However, the upper level low east of the Lesser Antilles will continue to cause strong vertical wind shear.  Lorenzo will also continue to move through the region of drier air.  The strong vertical wind shear and drier will inhibit intensification.  Tropical Storm Lorenzo could weaken to a tropical depression on Wednesday.

Tropical Storm Lorenzo will move around the western end of a high pressure system that is over the eastern Atlantic Ocean.  The high pressure system will steer Lorenzo toward the north during the next 24 hours.  On its anticipated track, Tropical Storm Lorenzo will remain out in the middle of the Atlantic Ocean during the next few days.

Tropical Storm Lorenzo Forms Over Central Atlantic

Tropical Storm Lorenzo formed over the central tropical Atlantic Ocean on Monday morning,  At 5:00 a.m. EDT on Monday the center of Tropical Storm Lorenzo was located at latitude 14.2°N and longitude 40.3°W which put the center about 1095 miles (1760 km) west of the Cabo Verde Islands.  Lorenzo was moving toward the northwest at 17 m.p.h. (28 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1006 mb.

A low pressure system over the central tropical Atlantic Ocean west of the Cabo Verde Islands strengthened on Monday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Lorenzo.

More thunderstorms were forming near the center of Tropical Storm Lorenzo on Monday morning.  Thunderstorms were also occurring in bands in the northern and eastern parts of Lorenzo’s circulation.  Bands in the southern and western parts of Lorenzo consisted primarily of showers and lower clouds.  Storms near the center of Lorenzo began to generate upper level divergence that pumped mass away to the north and east of the tropical storm.

The strongest winds were occurring in the northeastern part of Tropical Storm Lorenzo.  Winds to tropical storm force extended out 90 miles (145 km) in the northeastern quadrant of Lorenzo’s circulation.  The winds in the other parts of Tropical Storm Lorenzo were blowing at less than tropical storm force.

Tropical Storm Lorenzo will move through an environment somewhat favorable for intensification during the next 24 hours.  Lorenzo will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the eastern side of an upper level low that is northeast of South America.  The upper level low will produce southwesterly winds that will blow toward the top of Lorenzo’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Lorenzo could intensify during the next 24 hours if the upper level winds do not get any stronger.

Tropical Storm Lorenzo will move around the eastern side of a high pressure system that is over the eastern Atlantic Ocean.  The high pressure system will steer Lorenzo toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Lorenzo could approach the Azores at the end of the week.