Insert multiple documents in Elasticsearch – bulk doc formatter

You could utilize the bulk method of the official python package:

import json

from noaa_sdk import noaa
from elasticsearch import Elasticsearch
from elasticsearch.helpers import bulk


noaa_client = noaa.NOAA()
alerts = noaa_client.alerts()['features']

es = Elasticsearch()


def save_alerts():
    with open('nhc_alerts.json', 'w') as f:
        f.write(json.dumps(alerts))


def bulk_sync():
    actions = [
        {
            "_index": "my_noaa_index",
            "_source": alert
        } for alert in alerts
    ]

    bulk(es, actions)


save_alerts()
bulk_sync()