TROPICAL STORM BARRY 1995

Tropical Storm Barry 1995

Preliminary Report
Tropical Storm Barry
05 - 10 July 1995


1995 PRELIMINARY REPORTS

Hurricane Allison (1)
Tropical Storm Barry (TS)
Tropical Storm Chantal (TS)
Tropical Storm Dean (TS)
Hurricane Erin (2)
Hurricane Felix (4)
Tropical Storm Gabrielle (TS)
Hurricane Humberto (2)
Hurricane Iris (2)
Tropical Storm Jerry (TS)
Tropical Storm Karen (TS)
Hurricane Luis (4)
Hurricane Marilyn (3)

Hurricane Noel (1)
Hurricane Opal (4)
Tropical Storm Pablo (TS)
Hurricane Roxanne (3)
Tropical Storm Sebastien (TS)
Hurricane Tanya (1)





a. Synoptic History

The NHC surface analysis showed a weak 1019 mb frontal low midway between Bermuda and the South Carolina coast at 0600 UTC 5 July. Maximum sustained winds around the low were 12 to 23 mph based on available ship reports. Satellite imagery indicated that the clouds associated with the low gradually became isolated from the frontal cloud band over the next 24 to 36 hours. The satellite imagery also revealed that a low- level cloud system center became better defined just to the west of a small cluster of deep convection, and it is estimated that the frontal low transformed into Tropical Depression Two near 1800 UTC 6 July. Upper-level westerly shear was evident from the small area of deep convection remaining displaced to the east of the low- level center. Little overall movement was noted on 5 and 6 July.

The center of circulation became better defined by a curved low- to mid-level cloud band, and post-analysis suggests that the depression strengthened into Tropical Storm Barry near 0600 UTC 7 July. During the day, the storm began moving toward the north-northeast near 10 knots. This allowed the storm-relative shear to decrease and deep convection to move cyclonically around the western semicircle of the circulation. The deepest convection moved from just north through west to south of the circulation center. The presence of a negatively tilted mid- to upper-level trough just to the southwest of Barry appears to have favored the temporary increase in convection.

The maximum sustained winds are estimated to have occurred near 2100 UTC 7 July. At this time, an Air Force Reserve unit aircraft reported hurricane force winds at a flight-level of 1500 feet, but the minimum central pressure of 998 mb reported by the plane does not appear to support sustained hurricane strength. Central convection decreased dramatically after the strong winds were reported, and it is assumed that the aircraft winds were associated with a transitory mesoscale feature.

Satellite imagery revealed a cloud-free center within relatively weak surrounding convection by 0000 UTC 8 July. The next aircraft reconnaissance report indicated that the minimum central pressure had changed little, but the maximum flight-level winds had decreased about 46 mph from those that were measured the previous day. By 1800 UTC 8 July, a small area of deep convection had developed near the low-level circulation center. The storm began accelerating toward the north-northeast in advance of a large amplitude trough moving eastward over the eastern United States. The central dense overcast grew until near 1200 UTC on 9 July. Some of this increase in convection may have been related to the passage of Barry over a warm water eddy that bulged northward from the Gulf Stream to near 42N between 63-66W.

Convection associated with Barry began to weaken as the tropical cyclone continued to accelerate toward the north-northeast over cooler water. The maximum winds began to spread out away from the cyclone center as Barry gradually lost tropical characteristics, although upper-air soundings indicated that the cyclone still exhibited a warm core when it passed near Sable Island. The center of the storm crossed the eastern tip of the peninsula of Nova Scotia, near Hart Island, around 2130 UTC 9 July and then continued north-northeastward over Cape Breton Island. Barry became extratropical near the western coast of Newfoundland shortly after 0600 UTC 10 July. As a weakening extratropical cyclone, it could be tracked to near the southeast coast of Labrador before losing its identity.


b. Meteorological Statistics

On 9 July, Hart Island, Nova Scotia, reported 990.8 mb at 2145 UTC and Fourchu Head, Nova Scotia, reported 990.6 mb at 2248 UTC. The minimum central pressure curve is anchored to these surface reports and to the reports from aircraft reconnaissance on 7 and 8 July.

The maximum wind reported by aircraft was 99 mph at a flight-level of 1500 feet at 2050 UTC 7 July. The latest available satellite wind estimates at that time were 40 mph from both the NHC and the NESDIS Synoptic Analysis Branch (SAB). The satellite wind estimate was 30 knots from the Air Force Global Weather Central (AFGWC) a few hours before and after the maximum winds reported by aircraft. Similar scatter occurred between the satellite estimates and the aircraft measurements of maximum winds on 8 July as well. At 1200 UTC, the NHC satellite analyst estimated 75 mph while the SAB analyst estimated 52 mph. At 1438 UTC, the analyst at the AFGWC estimated 35 mph. At 1328 UTC, the aircraft reported maximum winds of 49 mph at a flight-level of 1500 feet. Given the large amount of scatter in maximum wind information, there is obviously considerable uncertainty in the best track wind speed on Tropical Storm Barry.


c. Casualty and Damage Statistics

No reports of casualties or damage associated with Barry have been received at the NHC.


Maximum Sustained Winds For Tropical Storm Barry
05 - 10 July, 1995

Date/Time
(UTC)
Position Pressure
(mb)
Wind Speed
(mph)
Stage
Lat. (°N) Lon. (°W)
07/2100 33.6 69.9 998 70 Tropical Storm


Minimum Pressure For Tropical Storm Barry
05 - 10 July, 1995

Date/Time
(UTC)
Position Pressure
(mb)
Wind Speed
(mph)
Stage
Lat. (°N) Lon. (°W)
10/0600 48.5 59.2 989 45 Extratropical Storm


Landfall for Tropical Storm Barry
05 - 10 July, 1995
Date/Time
(UTC)
Pressure
(mb)
Wind Speed
(mph)
Stage Landfall
09/2130 990 60 Extratropical Storm Hart Island,
Nova Scotia
09/2200 990 60 Extratropical Storm Brenton Island,
Nova Scotia