Nav: Home

NASA looks at rainfall from Tropical Storm Dora

June 28, 2017

Now a tropical storm, Hurricane Dora has been skirting southwestern Mexico's coast since it formed and has transported tropical moisture onshore that has produced some heavy rain showers. The Global Precipitation Measurement mission or GPM core satellite has analyzed those rainfall rates.

The GPM core observatory satellite flew over Mexico's Pacific Ocean Coast on June 26, 2017 at 0601Z (2:01 a.m. EDT). At that time Dora was moving toward the west-northwest parallel to Mexico's coastline and had just been upgraded to a hurricane. GPM's Microwave Imager (GMI) showed that rain was falling at a rate of over 2 inches (50.8 mm) per hour southwest of Dora's eye.

GPM's Dual-Frequency Precipitation Radar (DPR) swath covered an area west and north of hurricane Dora. GPM's Precipitation Radar (DPR) scanned intense storms located over Mexico's coast north of the hurricane's center and found rainfall occurring there at a rate of 1.4 inches (35 mm) per hour. Heaviest rainfall occurred at a rate of over 2.4 inches (60.5 mm) per hour in Dora's southwestern quadrant.

At NASA's Goddard Space Flight Center in Greenbelt, Maryland where the rainfall analysis was conducted, GPM data was used to also create at 3-D look at the hurricane. The GPM 3-D scan showed that a few of these thunderstorms had cloud tops reaching altitudes higher than 9.9 miles (15.9 km). Downpours in these storms were returning radar reflectivity values greater than 55dBZ to the satellite. GPM is a joint mission between NASA and the Japanese space agency JAXA.

At 5 a.m. EDT (0900 UTC) on June 28, the center of Tropical Storm Dora was located near latitude 19.8 degrees north latitude and 113.1 degrees west longitude. That's about 295 miles (480 km) southwest of the southern tip of Baja California, Mexico. Dora is moving toward the west-northwest near 10 mph (17 kph), and this motion is expected to continue through Thursday.

Maximum sustained winds have decreased to near 40 mph (65 kph) with higher gusts. Additional weakening is forecast. The estimated minimum central pressure is 1005 millibars.

NOAA's National Hurricane Center noted in the 5 a.m. EDT, June 28 discussion "Microwave images indicate that Dora stopped producing deep convection soon after 0000 UTC (8 p.m. EDT on June 27), and all cloud tops warmed above minus 50 degrees Celsius by 0245 UTC (10:45 p.m. EDT on June 27). The circulation now consists of a swirl of low- to mid-level clouds. Deep convection is unlikely to return due to cold sea surface temperatures, and Dora is forecast to degenerate to a remnant low later this morning or this afternoon."

For updated forecasts, visit: http://www.nhc.noaa.gov
-end-


NASA/Goddard Space Flight Center

Related Hurricane Articles:

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.
More Hurricane News and Hurricane Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Listen Again: Reinvention
Change is hard, but it's also an opportunity to discover and reimagine what you thought you knew. From our economy, to music, to even ourselves–this hour TED speakers explore the power of reinvention. Guests include OK Go lead singer Damian Kulash Jr., former college gymnastics coach Valorie Kondos Field, Stockton Mayor Michael Tubbs, and entrepreneur Nick Hanauer.
Now Playing: Science for the People

#562 Superbug to Bedside
By now we're all good and scared about antibiotic resistance, one of the many things coming to get us all. But there's good news, sort of. News antibiotics are coming out! How do they get tested? What does that kind of a trial look like and how does it happen? Host Bethany Brookeshire talks with Matt McCarthy, author of "Superbugs: The Race to Stop an Epidemic", about the ins and outs of testing a new antibiotic in the hospital.
Now Playing: Radiolab

Dispatch 6: Strange Times
Covid has disrupted the most basic routines of our days and nights. But in the middle of a conversation about how to fight the virus, we find a place impervious to the stalled plans and frenetic demands of the outside world. It's a very different kind of front line, where urgent work means moving slow, and time is marked out in tiny pre-planned steps. Then, on a walk through the woods, we consider how the tempo of our lives affects our minds and discover how the beats of biology shape our bodies. This episode was produced with help from Molly Webster and Tracie Hunte. Support Radiolab today at Radiolab.org/donate.