1. Central America & Hispaniola Briefing 16 August 2011 Tom.DiLiberto@noaa.gov Tropical Storm Gert

2. This Week: Past Week: TRMM Rainfall

3. 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

4. This Week: Past Week: TRMM Weekly Anomalies Average rain across Hispaniola Above-average rain over northern Central America

5. 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

6. TRMM Primera Season Anomalies Anomaly (mm) Percent Normal (%) TRMM August Anomalies

9. Dekadal WRSI: CA 3 rd dekad of July 1 st dekad of August Similar conditions during first dekad of August as 3 rd Dekad of July.

10. Dekadal Soil Water Index: CA Overall, good SWI values across Central America Stress/Wilting values expand over drier areas in Honduras and bordering Nicaragua. 3 rd dekad of July 1 st dekad of August

11. Dekadal WRSI and SWI: Haiti Dryness continues across northwestern Haiti. 3 rd dekad of July 1 st dekad of August

12. NDVI anomalies

14. 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

16. L

17. 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