Discover and read the best of Twitter Threads about #Hispaniola
Most recents (2)
Why do strong Earthquakes take place in Haiti? Does it have something to do with Plate Tectonics?
What are the factors that put Haiti at risk?
Learn more in this thread on today’s #GeoAgenda with our collab w/@Daniela_A_Gallo ! 1/n
What are the factors that put Haiti at risk?
Learn more in this thread on today’s #GeoAgenda with our collab w/@Daniela_A_Gallo ! 1/n
A magnitude 7.2 (M 7.2) #earthquake struck #Haiti on August 14- west of the capital city, #PortAuPrince, and 50km west of the magnitude 7.0 devastating EQ that took place in 2010 which killed ~100,000 people and devastated the Island. 2/n
Both EQ;s were produced in the #EnriquilloPlantain fault zone, a complex boundary between two #tectonicplates. To the north there is another tectonic boundary, and this makes the Hispaniola island to be sandwiched in between a complex geological terrain 3/n
1/9: Over the last 24 hours there have been large eastward shifts in #Dorian's track. It may now just clip #PuertoRico to the east! How?
Let's start with Dorian's vertical structure. One critical change is how vertically coherent Dorian's vortex has become, as seen below.
Let's start with Dorian's vertical structure. One critical change is how vertically coherent Dorian's vortex has become, as seen below.
2/9: Here is another way to view it, this time from a lat-lon map. Over the last four GFS model cycles, the separation between the low & mid level centers of #Dorian decreases until they are on top of each other.
Correspondingly the low-level vortex migrates to the northeast.
Correspondingly the low-level vortex migrates to the northeast.
3/9: Since #Dorian's vortex is more vertically stacked, it feels a deeper steering layer, moving it more north vs. the low-level flow.
Yesterday's 06z GFS run had a shallow vortex, & its steering was impacted by the low-level Caribbean trade winds (925-700-hPa) into #Hispaniola.
Yesterday's 06z GFS run had a shallow vortex, & its steering was impacted by the low-level Caribbean trade winds (925-700-hPa) into #Hispaniola.
