NASA sees a slow-moving, soaking Tropical Storm Harvey

NASA sees a slow-moving, soaking Tropical Storm Harvey
This visible light image from NASA's Aqua satellite was captured by the MODIS instrument at 1:30 p.m. CDT on Aug. 26. Harvey's northernmost clouds cover Dallas, and southern extent stretched from Corpus Christi on the east coast, to Laredo in southwestern Texas. Credit: NASA Goddard MODIS Rapid Response Team

Hurricane Harvey has weakened to Tropical Storm while still centered over southeastern Texas, but continues to generate a tremendous amount of rainfall. Satellite imagery revealed the eye had disappeared as the storm weakened.

A visible light image from NASA's Aqua satellite was captured by the MODIS instrument at 1:30 p.m. CDT on Aug. 26. In the image, Harvey's northernmost clouds cover Dallas, and southern extent stretched from Corpus Christi on the east coast, to Laredo in southwestern Texas. At the time of the image, Harvey still maintained an eye and it was located between San Antonio and Victoria.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland, an image was created using visible light data from NOAA's GOES-East satellite imagery on Aug. 26 at 6:45 p.m. EDT (2245 UTC). The image showed a somewhat elongated center of circulation with a large area of thunderstorms wrapped around the center. Harvey's bands of thunderstorms stretching far to the east over Louisiana.

NOAA manages the GOES series of satellites, and NASA uses the satellite data to create images and animations. The animation was created by the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Harvey's Location at 4 p.m. CDT on Aug. 26

NOAA's National Hurricane Center said at 4 p.m. CDT (5 p.m. EDT/2100 UTC), the center of Tropical Storm Harvey was located by Doppler radar near latitude 29.1 North, longitude 97.6 West. That put's Harvey's center about 45 miles (70 km) west-northwest of Victoria, Texas. Harvey has been nearly stationary and little motion is anticipated during the next few days.

Maximum sustained winds have decreased to near 65 mph (100 km/h) with higher gusts. Additional weakening is expected during the next day or two. Tropical--force winds extend outward up to 115 miles (185 km) from the center. The estimated minimum central pressure is 990 mb (29.24 inches).

NASA sees a slow-moving, soaking Tropical Storm Harvey
NOAA's GOES-East satellite captured this visible image of Hurricane Harvey in the western Gulf of Mexico on Aug. 26 at 6:45 p.m. EDT (2245 UTC). Credit: NASA/NOAA GOES Project
Warnings Continue

A Storm Surge Warning was in effect for Port Aransas to High Island, Texas and a Tropical Storm Warning is in effect for Baffin Bay to High Island, Texas.

In addition, flooding remains the major concern. The National Hurricane Center said Harvey is expected to produce additional rain accumulations of 15 to 25 inches over the middle and upper Texas coast through Thursday. Isolated storm totals may reach around 40 inches in this area. Elsewhere during the same period, Harvey is expected to produce total rain accumulations of 5 to 15 inches farther south toward the lower Texas coast, farther west toward the Texas Hill Country and southwest and central Louisiana. Rainfall of this magnitude will cause catastrophic and life-threatening flooding.

NHC's Key Messages While Harvey Barely Moves

1. While Harvey's winds are decreasing, life-threatening hazards will continue from heavy rainfall over much of southeastern Texas and from storm surge along portions of the Texas coast.

2. Catastrophic and life-threatening flooding is expected across the middle and upper Texas coast from additional rainfall of 15 to 25 inches, with isolated storm totals as high as 40 inches, through Thursday, Aug. 31.

3. A Storm Surge Warning remains in effect for portions of the Texas coast. Life-threatening storm surge flooding will be slow to recede due to the slow motion of Harvey and a prolonged period of onshore flow. For a depiction of areas at risk, see the Storm Surge Watch/Warning Graphic at http://www.hurricanes.gov.

A list of rainfall observations compiled by the NOAA Weather Prediction Center can be found at: http://www.wpc.ncep.noaa.gov/discussions/nfdscc1.html


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NASA finds heavy rainfall in intensifying Tropical Storm Harvey

Citation: NASA sees a slow-moving, soaking Tropical Storm Harvey (2017, August 28) retrieved 27 May 2019 from https://phys.org/news/2017-08-nasa-slow-moving-tropical-storm-harvey.html
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Aug 28, 2017
You certainly can see some effects of global warming in this storm. First, the storm spun up very quickly from TS into a cat 4 in a very short distance and period of time. That energy had to come from somewhere, but the dumb old buck-tooth climate deniers wont believe that. Second, the amount of water in the feeder arms is just added evidence that the additional warming evaporates more water from the oceans. 20 Years ago, this storm would have easily been 3/4's the amount of moisture. Of course the denier goon squad will say something else while we all suffer conservative inaction on climate change.


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