diff --git a/R/process_weather_data.R b/R/process_weather_data.R
index 0e8bbf9..9431a49 100644
--- a/R/process_weather_data.R
+++ b/R/process_weather_data.R
@@ -8,94 +8,46 @@
 #' @return
 #' @author Emma Mendelsohn
 #' @export
-process_weather_data <- function(nasa_weather_directory_dataset, nasa_weather_dataset) {
+process_weather_data <- function(nasa_weather_directory_dataset, nasa_weather_dataset, model_dates) {
   
-  library(dbplyr)
   weather_dataset <- open_dataset(nasa_weather_directory_dataset) |> to_duckdb(table_name = "weather")
   
   weather_dataset <- weather_dataset |> 
-    mutate(across(c("month", "day", "day_of_year"), ~as.integer(.))) |> 
-    mutate(year_doy = paste(year, day_of_year, sep = "_"))
+    mutate(across(c(year, month, day, day_of_year), as.integer)) |> 
+    mutate(year_day_of_year = paste(year, day_of_year, sep = "_"))  
   
-  # calculate monthly averages by pixel
-  weather_means <- weather_dataset |> 
-    group_by(x, y, month) |> 
-    summarize(mean_relative_humidity = mean(relative_humidity),
-              mean_temperature = mean(temperature),
-              mean_precipitation = mean(precipitation)) |> 
-    ungroup()  
-  
-  # weather_means_check <- collect(weather_means)
-  
-  # get 30 day lags for selected dates
-  for(i in 1:nrow(model_dates_random_select)){
-    date_select <- model_dates_random_select[i,]$date
-    previous_30_days <- seq(date_select - 30, date_select - 1, by = "day")
-    previous_30_days_tib <- tibble(year = year(previous_30_days), day_of_year = yday(previous_30_days))
+  # generate the weather dataset - get the lagged anomolies for selected dates
+  # TODO: do this for each lag internal
+  outt <-  map(model_dates$date[model_dates$select_date], function(date_selected){
     
-    #TODO filter for year_doy for these 30 days
+    row_select <- which(model_dates$date == date_selected)
+    lag_dates <- model_dates |> slice((row_select - 30):(row_select - 1))
     
-    lag <- weather_dataset |> 
-      inner_join(previous_30_days_tib)
+    # lag: calculate mean by pixel for the preceeding 30 days
+    lagged_means <- weather_dataset |> 
+      filter(year_day_of_year %in% !!lag_dates$year_day_of_year) |> 
       group_by(x, y) |> 
-      window_frame(-30, -1) |> 
-      window_order(day_of_year) |> 
-      mutate(anomaly_relative_humidity_roll30 = mean(anomaly_relative_humidity))  |> 
-      ungroup()
-  }
-  
-  
-  
-  # calculate anomalies between lags and weighted monthly averages
-  
-  
-  
-  
-  
-  
-  
-  # # calculate monthly averages by pixel
-  # # calculate anomalies for each day relative to monthly average
-  # weather_anomalies <- weather_dataset |> 
-  #   group_by(x, y, month) |> 
-  #   mutate(mean_relative_humidity = mean(relative_humidity),
-  #          mean_temperature = mean(temperature),
-  #          mean_precipitation = mean(precipitation)) |> 
-  #   ungroup()  |> 
-  #   mutate(anomaly_relative_humidity = relative_humidity - mean_relative_humidity,
-  #          anomaly_temperature = temperature - mean_temperature,
-  #          anomaly_precipitation = precipitation - mean_precipitation)  
-  
-  # get rolling avg for each x,y
-  # throws memory error - PRAGMA temp_directory='/path/to/tmp.tmp'
-  weather_lags <- weather_anomalies |> 
-    group_by(x, y) |> 
-    window_frame(-30, -1) |> 
-    window_order(day_of_year) |> 
-    mutate(anomaly_relative_humidity_roll30 = mean(anomaly_relative_humidity))  |> 
-    ungroup()
-  
-  # check this worked
-  test = weather_lags |> filter(x == min(x), y == max(y), day_of_year < 50) |> collect()
-  
-  # ^ get rolling avg for 1 month, 2 month, 3 month ahead for each var
-  
-  # filter out top 90 days of days (these are used to inform the lags only)
-  
-  # filter for model_dates_random_select
-  
-  
-  ### testing notes
-  # SQL rolling avg
-  # "AVG(anomaly_precipitation) OVER (
-  #  ORDER BY day_of_year
-  #  ROWS BETWEEN 30 PRECEDING AND 1 PRECEDING)"
-  
-  # sanity checks
-  # mf <- memdb_frame(x = 1:100, y = 1:100)
-  # mf2 <- mf |> 
-  #   window_frame(-30, -1) |> 
-  #   window_order(y)  |> 
-  #   mutate(x2 = mean(x))
+      summarize(lag_relative_humidity = mean(relative_humidity),
+                lag_temperature = mean(temperature),
+                lag_precipitation = mean(precipitation)) |> 
+      ungroup() |> 
+      mutate(year_day_of_year = date_selected)
+    
+    # overall: calculate mean across the full dataset for the days of the year covered by the lag period
+    overall_means <- weather_dataset |> 
+      filter(day_of_year %in% !!lag_dates$day_of_year ) |> 
+      group_by(x, y) |> 
+      summarize(overall_relative_humidity = mean(relative_humidity),
+                overall_temperature = mean(temperature),
+                overall_precipitation = mean(precipitation)) |> 
+      ungroup() |> 
+      mutate(year_day_of_year = date_selected)
+    
+    
+    #TODO  
+    # join the lagged mean with the historical mean and calculate anomoly
+    # join with the data from the actual day, one row for each x, y, selected date
+    
+  })
   
 }
diff --git a/R/random_select_model_dates.R b/R/random_select_model_dates.R
deleted file mode 100644
index e40108f..0000000
--- a/R/random_select_model_dates.R
+++ /dev/null
@@ -1,30 +0,0 @@
-#' .. content for \description{} (no empty lines) ..
-#'
-#' .. content for \details{} ..
-#'
-#' @title
-#' @param start_year
-#' @param end_year
-#' @param n_per_month
-#' @return
-#' @author Emma Mendelsohn
-#' @export
-random_select_model_dates <- function(start_year, end_year, n_per_month, seed = 1) {
-  
-  set.seed(seed)
-  
-  # Create a vector of dates from January 2005 to December 2022
-  dates <- seq(as.Date(paste0(start_year,"-01-01")), as.Date(paste0(end_year, "-12-31")), by = "day")
-  
-  tibble(date = dates) |> 
-    mutate(year = format(dates, "%Y"),
-           month = format(date, "%m"),
-           day = format(dates, "%d")) |> 
-    group_by(month, year) |> 
-    sample_n(size = n_per_month, replace = FALSE)  |> 
-    ungroup()  |> 
-    mutate(across(c(year, month, day), as.integer)) |> 
-    arrange(year, month, day) 
-  
-  
-}
diff --git a/R/set_model_dates.R b/R/set_model_dates.R
new file mode 100644
index 0000000..a19df7d
--- /dev/null
+++ b/R/set_model_dates.R
@@ -0,0 +1,35 @@
+#' .. content for \description{} (no empty lines) ..
+#'
+#' .. content for \details{} ..
+#'
+#' @title
+#' @param start_year
+#' @param end_year
+#' @param n_per_month
+#' @return
+#' @author Emma Mendelsohn
+#' @export
+set_model_dates <- function(start_year, end_year, n_per_month, lag_intervals, seed = 1) {
+  
+  set.seed(seed)
+  
+  # Create a vector of dates from January 2005 to December 2022
+  dates <- seq(as.Date(paste0(start_year,"-01-01")), as.Date(paste0(end_year, "-12-31")), by = "day")
+  
+  model_dates <-tibble(date = dates) |> 
+    mutate(year = format(dates, "%Y"),
+           month = format(dates, "%m"),
+           day = format(dates, "%d"),
+           day_of_year = format(dates, "%j")) |>     
+    mutate(across(c(year, month, day, day_of_year), as.integer)) |> 
+    mutate(year_day_of_year = paste(year, day_of_year, sep = "_")) |> 
+    group_by(month, year) |> 
+    mutate(select_date = row_number() %in% sample(n(), n_per_month)) |> 
+    ungroup()  |> 
+    arrange(year, month, day) 
+  
+  # make sure we always have enough days to calculate lags
+  model_dates$select_date[1:max(lag_intervals)] <- FALSE
+  
+  return(model_dates)
+}
diff --git a/_targets.R b/_targets.R
index a758cf8..6a50339 100644
--- a/_targets.R
+++ b/_targets.R
@@ -286,12 +286,13 @@ dynamic_targets <- tar_plan(
 # Data Processing -----------------------------------------------------------
 data_targets <- tar_plan(
   
-  tar_target(model_dates_random_select, random_select_model_dates(start_year = 2006, end_year = 2022, n_per_month = 2, seed = 212)),
+  tar_target(lag_intervals, c(30, 60, 90)), 
+  tar_target(model_dates, set_model_dates(start_year = 2005, end_year = 2022, n_per_month = 2, lag_intervals, seed = 212)),
   
   # TODO take nasa_weather_directory_dataset and do full lag calcs in this function using duckdb, then collect into memory
   tar_target(weather_data, process_weather_data(nasa_weather_directory_dataset, 
                                                 nasa_weather_dataset, # enforce dependency
-                                                model_dates_random_select)),
+                                                model_dates)),
   # tar_target(ndvi_data, process_ndvi_data(sentinel_ndvi_directory_dataset, sentinel_ndvi_dataset, model_dates_random_select))
   
 )
diff --git a/_targets/meta/meta b/_targets/meta/meta
index 9afe758..1b57ea0 100644
--- a/_targets/meta/meta
+++ b/_targets/meta/meta
@@ -1,5 +1,5 @@
 name|type|data|command|depend|seed|path|time|size|bytes|format|repository|iteration|parent|children|seconds|warnings|error
-.Random.seed|object|03fa9cad30a33312|||||||||||||||
+.Random.seed|object|adfbe9c01236ca30|||||||||||||||
 all_targets|function|2dda5afbd1f92385|||||||||||||||
 aws_bucket|object|d9cf2c5ff7cc1be4|||||||||||||||
 cache_aws_branched_target|function|6e2abfa4969de1bf|||||||||||||||
@@ -18,7 +18,7 @@ create_modis_ndvi_dataset|function|bb9bcd506ae906bd|||||||||||||||
 create_nasa_weather_dataset|function|c12b134b7be25c25|||||||||||||||
 create_raster_template_plot|function|db738156a3247831|||||||||||||||
 create_sentinel_ndvi_dataset|function|201d4eaf8c87d0c3|||||||||||||||
-data_targets|object|77e0b70e7dba2755|||||||||||||||
+data_targets|object|20a3ace986c6d250|||||||||||||||
 define_bounding_boxes|function|e614caacc0592e73|||||||||||||||
 define_country_regions|function|54808365a1bb460e|||||||||||||||
 deploy_targets|object|1eb1bc8d77111ded|||||||||||||||
@@ -179,8 +179,10 @@ get_sentinel_ndvi_api_parameters|function|ec6ebe60c7637311|||||||||||||||
 get_wahis_rvf_outbreaks_raw|function|a8564ce9127c9c1d|||||||||||||||
 get_weather_anomalies|function|1956aa290dc4fc5d|||||||||||||||
 get_weather_data|function|1956aa290dc4fc5d|||||||||||||||
+lag_intervals|stem|f4c9e8a4d588925c|6b4f81cd41a7b83e|a3dad144c40657ed|1055089432|bucket=open-rvfcast-data*region=NULL*key=_targets/lag_intervals*endpoint=TlVMTA*version=|t19615.7794897048s||55|qs|aws|vector|||0||
 make_model_data|function|df0e5631ac6d7b53|||||||||||||||
-model_dates_random_select|stem|42d120b8aa048c60|5719b67ece4afca5|4ea98346634ca2b4|-368262049|bucket=open-rvfcast-data*region=NULL*key=_targets/model_dates_random_select*endpoint=TlVMTA*version=|t19614.8223630127s||6256|qs|aws|vector|||0.037||
+model_dates|stem|27f5b73d53fcb5e3|7646f39f9ba1810e|a8bb283b4980c84f|-204838086|bucket=open-rvfcast-data*region=NULL*key=_targets/model_dates*endpoint=TlVMTA*version=|t19615.7807563168s||80537|qs|aws|vector|||0.052||
+model_dates_random_select|stem|ae6d12f9d280efdc|5719b67ece4afca5|41d39307354de6b6|-368262049|bucket=open-rvfcast-data*region=NULL*key=_targets/model_dates_random_select*endpoint=TlVMTA*version=|t19615.75211742s||76313|qs|aws|vector|||0.04||
 model_targets|object|1eb1bc8d77111ded|||||||||||||||
 modis_directory|stem|0404b408f5e5efef|c985137dd9b95cd4|ef46db3751d8e999|-671711443|bucket=project-dtra-ml-main*region=NULL*key=open-rvfcast/_targets/modis_directory*endpoint=TlVMTA*version=qdLdze87LwJZuMPusz2ovPXxe2rabGWb|t19493.6071375984s||55|qs|aws|vector|||0.001||
 modis_ndvi_bundle|stem|error|a6c770fab6751fac|9d56e94e8363274f|-1456098296|bucket=open-rvfcast-data*region=NULL*key=_targets/modis_ndvi_bundle*endpoint=TlVMTA*version=|t19605.5645307177s||30|qs|aws|vector|||0.33||object task_id not found
@@ -3940,8 +3942,8 @@ preprocess_ecmwf_forecasts|function|033bd8a3c45b4d46|||||||||||||||
 preprocess_nasa_weather|function|f5c92fafb420500d|||||||||||||||
 preprocess_wahis_rvf_outbreaks|function|1739270cf02b72d6|||||||||||||||
 process_ndvi_data|function|8a56ce9bd504bbec|||||||||||||||
-process_weather_data|function|cfab097511ff525b|||||||||||||||
-random_select_model_dates|function|9ff4c8b11c4c6a0f|||||||||||||||
+process_weather_data|function|6dbc7677081a102e|||||||||||||||
+random_select_model_dates|function|75d79de28b5c2e87|||||||||||||||
 read_transform_raster|function|f7518264efa394ed|||||||||||||||
 report_targets|object|1eb1bc8d77111ded|||||||||||||||
 rolling_box|function|1195d491d98c697b|||||||||||||||
@@ -4964,6 +4966,7 @@ sentinel_ndvi_transformed_rasters_fefd5c9f|branch|891b7ee44128fe79|7490e5717bc38
 sentinel_ndvi_transformed_upload_aws_s3|stem|138c6bf81e1f5512|14599b5def8fdb12|a880a8df380b19ae|1391835690|bucket=open-rvfcast-data*region=NULL*key=_targets/sentinel_ndvi_transformed_upload_aws_s3*endpoint=TlVMTA*version=|t19520.9852950252s||19579|qs|aws|vector|||159.826||
 sentinel_ndvi_upload_aws_s3|stem|1a358ba66cfb3375|b9c6a884566d5476|826f421e76bc51b5|-1245746504|bucket=open-rvfcast-data*region=NULL*key=_targets/sentinel_ndvi_upload_aws_s3*endpoint=TlVMTA*version=|t19517.6998651133s||20237|qs|aws|vector|||397.502||
 set_ecmwf_api_parameter|function|e3e4962883690ed5|||||||||||||||
+set_model_dates|function|b0923ca118fec651|||||||||||||||
 set_nasa_api_parameter|function|ac1cc420c9c9242c|||||||||||||||
 static_targets|object|cbd54d1aeedd375e|||||||||||||||
 submit_modis_ndvi_bundle_request|function|70d5dcdcf3510fa0|||||||||||||||
@@ -4974,7 +4977,7 @@ test_targets|object|1eb1bc8d77111ded|||||||||||||||
 transform_nasa_weather|function|e80c244fb32ef2bd|||||||||||||||
 transform_raster|function|47f20ba2b9ef9722|||||||||||||||
 transform_sentinel_ndvi|function|92a19330c7f2bff2|||||||||||||||
-user_rprof|object|a66bd50c4c539996|||||||||||||||
+user_rprof|object|2a027f145a5a1891|||||||||||||||
 wahis_rvf_outbreaks_preprocessed|stem|30ccd988b415d773|3ea98184b5887c93|275a59d310ff2a63|2127878318|bucket=open-rvfcast-data*region=NULL*key=_targets/wahis_rvf_outbreaks_preprocessed*endpoint=TlVMTA*version=|t19517.6952212142s||172965|qs|aws|vector|||0.043||
 wahis_rvf_outbreaks_raw|stem|6fc7e6c7238977b3|b988ec4215d4213c|5ed4661ae3efb1aa|1933416983|bucket=open-rvfcast-data*region=NULL*key=_targets/wahis_rvf_outbreaks_raw*endpoint=TlVMTA*version=|t19517.6952047733s||173410|qs|aws|vector|||29.629||
 wahis_rvf_query|function|9836433f6f1061fb|||||||||||||||