Satellite precipitation estimates and the CAFFG

systemBy

Rosario Alfaro

CAMI (Central American Mitch Initiative)

• No radar over the region and few gauges in real time

• GOES Satellite Data and the RAMSDIS system (Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama)

• Precipitation estimates from the Hydro-Estimator (running in a server in Costa Rica)

• CAFFG (Central American Flash Flood Guidance) system

CAFFG (Central American Flash Flood

Guidance) system• Developed by the Hydrological Research Center in

San Diego whose Director is Dr. Kosta Georgakakos• It works automatically. Produce Different products

at different times• The input data in real time: satellite precipitation

estimates and temperature.• It also use historical data of precipitation, humidity,

evapotranspiration and temperature• Main computational components of the system: the

soil moisture model and the FFG model

CAFFG (continues)

• Consist of the processing and the dissemination servers both located in the National Meteorological Institute of Costa Rica.

• The products are available approximately 30 minutes after each hour.

• The dissemination server has the web page where the products are.

• The interpretation of the products needs training.• The validation is an on going process at this time

The web page (https://cds.imn.ac.cr)

Flash Flood Guidance:actual rainfall of given duration that is just enough tocause bankfull flows in small streamsIt is calculated at 00, 06, 12 and 18 UTC for 1, 3 and 6 hrsIt is not calculated for basins whose area is greater than 2000 km2

Other products: ArcView tables

• Basin ID• 01MAP2004102602• 03MAP2004102600• 06MAP2004102600• 24MAP2004102600• 06ASM2004102600• 01FFG2004102600• 03FFG2004102600• 06FFG2004102600

Errors

• Precipitation

• Soil

• FFG

• Forecast

Final result

Warnings for flooding in small basins of the Central American

region

Clasificación de cuencasNo hay datoInundación o inundación inminentePosible inundaciónNo hay riesgo de inundación

100 0 100 200 Kilometers

N

EW

S

Evaluación del riesgo de inundación correspondiente al 17-09-04 a las 18 Z válido a las 00 Z del 18-09-04

flooding

Case in Panama

#########

######

###

##############

######

#

## ######## #########

#####

#####

######

#####

#####

##

### #

# ##

#

#######

############# ###### ##

#

#

####

#############

##

#

##

## ##########

# ########## ####

#

### ######

######## #####

## ############

##### #

#

###

###

#

######

########## #######

######

## #

#

########

##

#

######## #### ###

####

###

##### ###

####

#

######

#

##### ##

#####

###

#

###

# #

#

#

######

#

######## ###########

#

##

################# ##

########

#

##

#################

#########

#

##########

###

#

##

########

#

##### ###

# #

####### #

#

########

##

##

###

#

#########

###

##

###

#

####

#####

#########

####### ##

#

############ ##

####

###### ### #

#####

###

#

#

#

#

#

#

#

#

##

## #

##### #

##

#

###

# ## #

#

#

##

# ### ####

#######

###

##

#############

#

##

###########

## ###########

###

###

##

####### ###

######

##

##

#

#

########### #

###########

##########

##

#

# ######

#####

#####

#######

######### #####

#

#

# ##

# #

##

####

#######

############

########

### #

##

##

###

##

#

#

##

#

## #

### ###

## #

###

####

# ### ## #

# ####

# #

## ####

##

######

#######

#

##

##

##

#

###

#

# #

#

#

#

#

#

#

###

#

##

#

#

###

######

###

##

##

## ##

#####

###

####

###

#########

####

#

###

##

#

## ## #

#

##

## #

#

##

##

#

###

##

#

##

#

##

#

#

## ##

#

##

##

# ##

##

##

###

#

####

###

# ##

#

#

##

##

#

##

###

#

#

#

#

##

#

##

##

###

## ##

#

#

#

##

#

##

## # #####

## ##

#

##

####

#####

## ##

###

##

#

#

##### ##

#

###

# #

#

#

#

#

#

#

#

##

##

###

#### #

###

####

#

### #######

##

# ####

### #

##

#

#

##

#

#

#

#

#######

###

# ###

##

#

#

#

#

#

#

##

#

####

###

## #

#

# ### #

###

#

###

###

#########

#

# #

#

##

#

# ##

##

#

##

#

#

#

# #####

######

#

#

####

###

#######

#

#

##

#

#

#

#

#

##

#

##

# ###

########

##

#

##

###

### #

##

##

# #

#

#

##

# #

#

##

#

## # #

###

# #

# #

# #

###

# ###

#

##

##

#######

########

##

#

##

#

####

## ##### ####

#

###

#

#

#

#

####

### #

#

##########

#

###

#

## #

###

## # #

##

#

#####

###

#########

# #

#

#######

#

#

#

##

##

####

#### ###

##

##

##

#

# #

#

##### #

# #

### ##

#

###########

############ #

##

#

#

####

##

####

#

####

#### # ######

##

#

## ##

##

##

## #

#

#

##### #

#

# #

#

#

##

#

######

##

# #

###

### #

##

#

##

#

## #

# #

###

#

#

# ## ##

##

# ##

##

#

#

###

# ##

###

### #

#

#

## ##

#

#

### ### #

####

#

#

#

#

##

#

#

#

##

##

####

#

##

#

#

#

## # #

#

#

#

####

###

##

#

##

#

##

###

## #

###

#

#

#

#

#

#

#

# #

#

#

#

# #

#######

####

##########

####

# ##

##

#

#########

########

#

#

#

#

## ###

###

### ## ###### ###

#

#

#

#

#

###

####

###

#

#

#

#####

## ###

#

####

# #

#

##

#

##

##

#

#

#

# ## #

# ##

#

#

# ####

##

# ### #

#

###

# ##

##

##

# #

#

#

#

#

# ##

##

#

#

##

#

#

##

#

####

###

#

## ##

##

# #

#### # #####

####

#

###

#

###

#

#

#

#

#

#####

##

#

###

##

##

### ###

##

##

## ##

###

##

# ###

####

##

##

#

#

#

#

########

#

###

#

#

##

#### # #

## ###

###

#

#

#

#

# #

###

#

#

#

## #

# #

##

#

##

# #

##

#

#

#

#

#

#

#

#

###

####

#

#

#

###

##

#

###

##

#

###

# #

###

#

##

#### #

#

####

###

##

## ###

##

##

###

#####

#

##

##

####

#

##

###

#

#

#

#

#

#

# #

##### ### ##

##

#

###

### # #

##

##

#

#

##

#

#

#

#

#

### #

#

#

#

#####

# ##

#

##

##

##

## #

# #

##

##

#

#

#

#

##

###

#### #

#

##

##

#######

##

##

##

##

##

# #

####

####

#

##

#

#

#

#

Cr_basin_delineation_dd.shpInundacion o inundacion inminentePosible inundacionNo hay riesgo de inundacion

#

No datos

100 0 100 200 Kilometers

N

EW

S

Evaluación del riesgo de inundación correspondiente al 06/10/04 a las 00Z

Case in Costa Rica

flooding

Clasificación de cuencasInundación o inundación inminentePosible inundaciónNo existe riesgo de inundación

No datos

70 0 70 140 Kilometers

N

EW

S

Evaluación del riesgo de inundación para el 29-09-04 válido a la 01 Z

Rangos Kosta

Case in El salvador

flooding

FIN

END