NASA sees heavy rain in Hurricane Hilda, south of Hawaii

August 12, 2015

Hurricane Hilda has been on a weakening trend and by August 12 it weakened to a Tropical Storm. When it was still a hurricane though, NASA satellite data showed that the northern side of the storm contained towering thunderstorms that were dropping heavy rainfall.

Hilda had winds of about 80 knots (92 mph) when the GPM core observatory satellite passed above on August 11, 2015 at 0411 UTC (August 10, 2015 at 6:11 p.m. HST). Rainfall data from GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments were combined with an infrared image of clouds from NOAA's GOES West satellite taken at 0400 UTC on August 11. The combined image showed the cloud extent and rainfall within the storm. GPM's DPR revealed that storms north of hurricane Hilda's eye were dropping rain at a rate of over 149.4 mm (5.9 inches) per hour.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland that data from GPM's radar data (DPR Ku band) were used to make a 3-D image that showed the heights of the thunderstorm tops within Hilda. The highest cloud tops were found near altitudes of over 16.5 km (10.2 miles) in powerful storms in the northwestern side of Hilda's eye wall.

As Hilda neared the big Island of Hawaii, NOAA's Central Pacific Hurricane Center posted a tropical storm watch for Hawaii County.

At 11 a.m. EDT/5 a.m. HST/1500 UTC on Wednesday, August 12, Hilda's maximum sustained winds had dropped to 45 mph (75 kph) and further weakening was forecast. The center of Tropical Storm Hilda was located near latitude 17.5 north and longitude 152.0 west. Hilda was moving toward the northwest near 5 mph (7 kph) and is expected to turn west through August 13.

Hilda is forecast to be a tropical depression tonight (August 12) or Thursday (August 13) and a remnant low by Thursday night.
-end-


NASA/Goddard Space Flight Center

Related Hurricane Articles from Brightsurf:

Hurricane resilience in the Bahamas
A new Stanford-led study provides information on how to invest in natural coastal ecosystems that the Bahamian government, community leaders and development banks are applying in post-disaster recovery and future storm preparation in the Bahamas.

NASA finds a weaker hurricane Juliette
Hurricane Juliette has been weakening and NASA-NOAA's Suomi NPP satellite provided a look at the strength of storms within.

NASA sees Dorian become a hurricane
NASA's Terra satellite passed over the northwestern Atlantic Ocean as Dorian reached hurricane status during the afternoon of August 28, 2019.

Landslides triggered by Hurricane Maria
Hurricane Maria hit the island of Puerto Rico on 20 September 2017 and triggered more than 40,000 landslides in at least three-fourths of Puerto Rico's 78 municipalities.

NASA sees Atlantic's Leslie become a hurricane
NASA's Aqua satellite captured an infrared image of Hurricane Leslie that revealed strong storms circled the center.

NASA sees Walaka becoming a powerful Hurricane
The Global Precipitation Measurement mission or GPM core satellite passed over the Central Pacific Hurricane Center and analyzed Walaka's rainfall and cloud structure as it was strengthening into a hurricane.

NASA finds a weaker Hurricane Olivia
Infrared data from NASA's Terra satellite revealed that the area of coldest cloud topped thunderstorms has dropped from the previous day, indicating weaker uplift and less-strong storms

NASA looks at heavy rainmaker in Hurricane Lane
Cloud top temperatures provide scientists with an understanding of the power of a tropical cyclone.

Hector weakens but remains Category 4 Hurricane
Hurricane Hector has weakened slightly but still remains a robust Category Four storm at present.

UA forecast: Below-average hurricane activity
The UA hurricane forecasting model, which has proved to be extremely accurate over the years, is calling for fewer hurricanes in the Atlantic this year on the heels of a devastating 2017.

Read More: Hurricane News and Hurricane Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.