Central America & Hispaniola BriefingCentral America & Hispaniola Briefing16 August 2011Tom.DiLiberto@noaa.govTom.DiLiberto@noaa.gov

Tropical Storm Gert

This Week:

Past Week:

TRMM Rainfall

TRMM Rainfall

From August 9 – August 15, 2011

Santa Ana = 63 mm

San Jose= 75.2 mm

San Salvador = 68.5 mm

David = 215.6 mm

Soto Cano AB= 112.7 mm

Santiago = 129.7 mm

This Week:

Past Week:

TRMM Weekly Anomalies

• Average rain across Hispaniola

• Above-average rain over northern Central America

This Week:

Past Week:

TRMM 30-day Anomalies

• Rainfall surpluses continue over much of Haiti

• Widespread surpluses over northern Central America. Below-average rain over Costa Rica

TRMM Primera Season Anomalies

Anomaly (mm)

Percent Normal (%)

TRMM August Anomalies

Dekadal WRSI: CA

3rd dekad of July

1st dekad of August

• Similar conditions during first dekad of August as 3rd Dekad of July.

Dekadal Soil Water Index: CA

• Overall, good SWI values across Central America• Stress/Wilting values expand over drier areas in Honduras and bordering

Nicaragua.

3rd dekad of July

1st dekad of August

Dekadal WRSI and SWI: Haiti

• Dryness continues across northwestern Haiti.

3rd dekad of July 1st dekad of August

NDVI anomalies

Active Tropics- Invest area 93L: Tropical convection weakened over last 24 hrs. Expected to track westward

bringing heavy rain showers to Puerto Rico and the lesser Antilles. - Some models begin to develop the system close to Honduras/Nicaragua before taking it

through Belize and the Yucatan Peninsula during the weekend

- 20% chance of developing into cyclone in next 48 hours

- Invest area 99e: Brought heavy rain showers to Pacific coast of Guatemala and Mexico.

Expected to track West Northwest. 70% chance of developing into a cyclone in next 48 hours

99e

93L

L

• Moderate to heavy rainfall across Central America

• Light to moderate rain expected over Hispaniola

• Several tropical areas of interest over the next week potentially affecting Central America and Hispaniola