Reconnaissance aircraft found that the maximum sustained wind speed in Tropical Depression Four has increased to 45 m.p.h. and it has been upgraded to Tropical Storm Cristobal.  At 8:00 a.m. EDT the center of Cristobal was located at latitude 23.0°N and longitude 73.0°W which put it about 135 miles east-southeast of Long Island in the Bahamas and about 480 miles east-southeast of Miami, Florida.  Cristobal was moving toward the northwest at 9 m.p.h.  The minimum surface pressure was 1002 mb.  Tropical Storm Warnings remain in effect for the Southeastern and Central Bahamas and the Turks and Caicos.

Upper level winds from the northwest appear to be creating wind shear over Cristobal.  Most of the convection is occurring east and south of the center.