Severe Weather Alert Map Dashboard

Node-RED Severe Weather Alert Map

Build a Severe Weather Alert Map Node-RED Dashboard using The Weather Company APIs

Use The Weather Company APIs to plot all of the current Severe Weather Alerts issued by the National Weather Service on a Node-RED Dashboard

This example flow and Node-RED Dashboard might be useful as part of a Call for Code solution. The Call for Code 2020 theme is to help reverse the impact of Climate Change.

Create additional Node-RED flows using the node-red-contrib-twc-weather package.

Prerequistes

• Install Node-RED on your system or in the cloud
• Add the following nodes to your Node-RED palette
  • node-red-dashboard
  • node-red-node-ui-table
  • node-red-contrib-web-worldmap
• If you are participating in the 2020 Call for Code you can register for a time limited TWC API key.

Node-RED flow details:

A flow that displays Severe Weather Alerts on a map

Get the Code: Node-RED flow for Severe Weather Alerts

Authors

• John Walicki

Enjoy! Give us feedback if you have suggestions on how to improve this tutorial.

License

This tutorial is licensed under the Apache Software License, Version 2. Separate third party code objects invoked within this code pattern are licensed by their respective providers pursuant to their own separate licenses. Contributions are subject to the Developer Certificate of Origin, Version 1.1 (DCO) and the Apache Software License, Version 2.

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flow.get(\"SevereAlerts\");\n\nfor( i = 0 ; i < msg.payload.alerts.length ; i++ ) {\n    if( msg.payload.alerts[i].severityCode <= 2 ) {\n        Severe.push(msg.payload.alerts[i]) ;\n    }\n}\nflow.set(\"SevereAlerts\", Severe);\n\nif( msg.payload.metadata.next === null ) {\n    return [null, msg] ;\n} else {\n    // Get the next chunk of Alerts\n    msg.url = 'https://api.weather.com/v3/alerts/headlines?countryCode=US&format=json&language=en-US&apiKey='+msg.apikey;\n    msg.url = msg.url + \"&next=\" + msg.payload.metadata.next ;\n\n    return [msg, null];\n}","outputs":2,"noerr":0,"x":390,"y":260,"wires":[["7bdcf8d3.df4518"],["4f00bc25.68816c"]]},{"id":"7bdcf8d3.df4518","type":"http request","z":"727d366f.1fd3b","name":"Next Block of 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Alerts","rules":[{"t":"set","p":"payload","pt":"msg","to":"SevereAlerts","tot":"msg"},{"t":"set","p":"payload","pt":"msg","to":"SevereAlerts","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":580,"y":320,"wires":[["39267c6f.0a02bc","f72d3d3e.bc3d88"]]},{"id":"39267c6f.0a02bc","type":"debug","z":"727d366f.1fd3b","name":"All Severe","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":800,"y":320,"wires":[]},{"id":"628c5fe.10653a","type":"change","z":"727d366f.1fd3b","name":"","rules":[{"t":"set","p":"apikey","pt":"msg","to":"twcapikey","tot":"flow"},{"t":"delete","p":"SevereAlerts","pt":"flow"},{"t":"set","p":"SevereAlerts","pt":"flow","to":"[]","tot":"json"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":160,"wires":[["a1937a33.e32a88"]]},{"id":"a5ecb7d0.c5597","type":"function","z":"727d366f.1fd3b","name":"Next","func":"if( typeof msg.payload.alerts == 'undefined' ) {\n    // No Severe Alerts for this State / District\n    // Blank the table\n    msg.payload = [];\n    return [null, null, msg] ;\n}\nvar Severe = flow.get(\"SevereAlerts\") ;\n\nfor( i = 0 ; i < msg.payload.alerts.length ; i++ ) {\n    if( msg.payload.alerts[i].severityCode <= 2 ) {\n        Severe.push(msg.payload.alerts[i]) ;\n    }\n}\nflow.set(\"SevereAlerts\", Severe);\n\nif( msg.payload.metadata.next === null ) {\n    return [null, msg, null] ;\n} else {\n    // Get the next chunk of Alerts\n    msg.url = 'https://api.weather.com/v3/alerts/headlines?adminDistrictCode='+msg.admindistrictcode+'&format=json&language=en-US&apiKey='+msg.apikey;\n    msg.url = msg.url + \"&next=\" + msg.payload.metadata.next ;\n\n    return [msg, null, null];\n}","outputs":3,"noerr":0,"x":390,"y":700,"wires":[["9fcd6710.403a38"],["c856737c.3d8508"],["81c64620.3a57"]]},{"id":"9fcd6710.403a38","type":"http request","z":"727d366f.1fd3b","name":"Next Block of 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/alertmap","rules":[{"t":"delete","p":"payload","pt":"msg"},{"t":"set","p":"payload.url","pt":"msg","to":"\"/alertmap\"","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":420,"y":980,"wires":[["810fda87.de437"]]},{"id":"62514346.1f93cc","type":"delay","z":"727d366f.1fd3b","name":"","pauseType":"delay","timeout":"1","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":400,"y":920,"wires":[["e960f8cc.4b8728"]]},{"id":"58132aae.15c48c","type":"inject","z":"727d366f.1fd3b","name":"Init WorldMap","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":true,"onceDelay":"1","x":200,"y":980,"wires":[["62514346.1f93cc","2712a047.972ef8"]]},{"id":"97585bd4.3585c8","type":"comment","z":"727d366f.1fd3b","name":"One time - Add Map to Dashboard","info":"","x":170,"y":920,"wires":[]},{"id":"d5ffe03.5a308a","type":"function","z":"727d366f.1fd3b","name":"Plot on Map","func":"msg.payload.lat = msg.payload.latitude;\nmsg.payload.lon = msg.payload.longitude;\nmsg.payload.name = msg.payload.detailKey;\n\n\nmsg.payload.icon = \"globe\";\nif( msg.payload.severityCode > 2 ) {\n    msg.payload.iconColor = \"red\";\n} else {\n    msg.payload.iconColor = \"orange\";\n}\n\nmsg.payload.command = { zoom:6, \n                            \"lat\":msg.payload.lat,\n                            \"lon\":msg.payload.lon,\n                            autopan:true };\n\ndelete msg.payload.latitude;\ndelete msg.payload.longitude;\ndelete msg.payload.type;\nreturn msg;","outputs":1,"noerr":0,"x":790,"y":880,"wires":[["a0e723d6.f6fc48"]]},{"id":"6d197c4c.0d3884","type":"split","z":"727d366f.1fd3b","name":"Split / Plot 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contain:\n\n<HTML><HEAD>\n<TITLE>Access Denied</TITLE>\n</HEAD><BODY>\n<H1>Access Denied</H1>\n \nYou don't have permission to access \"http&#58;&#47;&#47;api&#46;weather&#46;com&#47;v3&#47;alerts&#47;headlines&#63;\" on this server.<P>\nReference&#32;&#35;18&#46;4d3c2b17&#46;1573048691&#46;85dab1a\n</BODY>\n</HTML>"},{"id":"1080bfa8.a06a6","type":"change","z":"727d366f.1fd3b","name":"Error API Key access denied","rules":[{"t":"set","p":"payload","pt":"msg","to":"Access Denied - Your API key does not have permission to access this API","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":460,"y":640,"wires":[["3610e571.255d72"]]},{"id":"3610e571.255d72","type":"debug","z":"727d366f.1fd3b","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":990,"y":640,"wires":[]},{"id":"f72d3d3e.bc3d88","type":"link out","z":"727d366f.1fd3b","name":"US All 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Columbia\":\"DC:US\"},{\"Delaware\":\"DE:US\"},{\"Florida\":\"FL:US\"},{\"Georgia\":\"GA:US\"},{\"Guam\":\"GU:US\"},{\"Hawaii\":\"HI:US\"},{\"Iowa\":\"IA:US\"},{\"Idaho\":\"ID:US\"},{\"Illinois\":\"IL:US\"},{\"Indiana\":\"IN:US\"},{\"Kansas\":\"KS:US\"},{\"Kentucky\":\"KY:US\"},{\"Louisiana\":\"LA:US\"},{\"Massachusetts\":\"MA:US\"},{\"Maryland\":\"MD:US\"},{\"Maine\":\"ME:US\"},{\"Michigan\":\"MI:US\"},{\"Minnesota\":\"MN:US\"},{\"Missouri\":\"MO:US\"},{\"Mississippi\":\"MS:US\"},{\"Montana\":\"MT:US\"},{\"North Carolina\":\"NC:US\"},{\"North Dakota\":\"ND:US\"},{\"Nebraska\":\"NE:US\"},{\"New Hampshire\":\"NH:US\"},{\"New Jersey\":\"NJ:US\"},{\"New Mexico\":\"NM:US\"},{\"Nevada\":\"NV:US\"},{\"New York\":\"NY:US\"},{\"Ohio\":\"OH:US\"},{\"Oklahoma\":\"OK:US\"},{\"Oregon\":\"OR:US\"},{\"Pennsylvania\":\"PA:US\"},{\"Puerto Rico\":\"PR:US\"},{\"Rhode Island\":\"RI:US\"},{\"South Carolina\":\"SC:US\"},{\"South 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Samoa\":\"AS:US\"},{\"Arizona\":\"AZ:US\"},{\"California\":\"CA:US\"},{\"Colorado\":\"CO:US\"},{\"Connecticut\":\"CT:US\"},{\"District of Columbia\":\"DC:US\"},{\"Delaware\":\"DE:US\"},{\"Florida\":\"FL:US\"},{\"Georgia\":\"GA:US\"},{\"Guam\":\"GU:US\"},{\"Hawaii\":\"HI:US\"},{\"Iowa\":\"IA:US\"},{\"Idaho\":\"ID:US\"},{\"Illinois\":\"IL:US\"},{\"Indiana\":\"IN:US\"},{\"Kansas\":\"KS:US\"},{\"Kentucky\":\"KY:US\"},{\"Louisiana\":\"LA:US\"},{\"Massachusetts\":\"MA:US\"},{\"Maryland\":\"MD:US\"},{\"Maine\":\"ME:US\"},{\"Michigan\":\"MI:US\"},{\"Minnesota\":\"MN:US\"},{\"Missouri\":\"MO:US\"},{\"Mississippi\":\"MS:US\"},{\"Montana\":\"MT:US\"},{\"North Carolina\":\"NC:US\"},{\"North Dakota\":\"ND:US\"},{\"Nebraska\":\"NE:US\"},{\"New Hampshire\":\"NH:US\"},{\"New Jersey\":\"NJ:US\"},{\"New Mexico\":\"NM:US\"},{\"Nevada\":\"NV:US\"},{\"New York\":\"NY:US\"},{\"Ohio\":\"OH:US\"},{\"Oklahoma\":\"OK:US\"},{\"Oregon\":\"OR:US\"},{\"Pennsylvania\":\"PA:US\"},{\"Puerto Rico\":\"PR:US\"},{\"Rhode Island\":\"RI:US\"},{\"South Carolina\":\"SC:US\"},{\"South Dakota\":\"SD:US\"},{\"Tennessee\":\"TN:US\"},{\"Texas\":\"TX:US\"},{\"Utah\":\"UT:US\"},{\"Virginia\":\"VA:US\"},{\"Virgin Islands\":\"VI:US\"},{\"Vermont\":\"VT:US\"},{\"Washington\":\"WA:US\"},{\"Wisconsin\":\"WI:US\"},{\"West Virginia\":\"WV:US\"},{\"Wyoming\":\"WY:US\"}]","payloadType":"json","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":150,"y":440,"wires":[["77daef29.443818"]]},{"id":"b5b2d26c.8d6cb","type":"debug","z":"727d366f.1fd3b","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":730,"y":480,"wires":[]},{"id":"fa34b305.664188","type":"switch","z":"727d366f.1fd3b","name":"Which State Selected?","property":"payload","propertyType":"msg","rules":[{"t":"nnull"}],"checkall":"true","repair":false,"outputs":1,"x":200,"y":560,"wires":[["de3ccf91.9c4ac8"]]},{"id":"fb2f8c73.ee71e8","type":"comment","z":"727d366f.1fd3b","name":"Select States - 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msg.payload[i].areaName ;\n      TableEntry.headline = msg.payload[i].headlineText ;\n      TableEntry.latitude = msg.payload[i].latitude ;\n      TableEntry.longitude = msg.payload[i].longitude ;\n      // node.warn( TableEntry ) ;\n      TableArray.push( TableEntry );\n}\n\nmsg.payload = TableArray;\nreturn msg;","outputs":1,"noerr":0,"x":790,"y":820,"wires":[["e206cfd8.b9563","81c64620.3a57"]]},{"id":"e206cfd8.b9563","type":"debug","z":"727d366f.1fd3b","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":990,"y":800,"wires":[]},{"id":"5b0167f4.7d9438","type":"debug","z":"727d366f.1fd3b","name":"onClick","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","x":1200,"y":840,"wires":[]},{"id":"5814b416.56931c","type":"change","z":"727d366f.1fd3b","name":"Zoom Map on 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Alerts","tooltip":"","color":"","bgcolor":"","icon":"","payload":"","payloadType":"str","topic":"","x":220,"y":120,"wires":[["628c5fe.10653a"]]},{"id":"aee64557.a49f98","type":"ui_text","z":"727d366f.1fd3b","group":"8483c94.42c1e38","order":2,"width":"22","height":"1","name":"Headline","label":"","format":"{{msg.payload.headline}}","layout":"row-left","x":1200,"y":800,"wires":[]},{"id":"9dd6b77d.223ed","type":"delay","z":"727d366f.1fd3b","name":"","pauseType":"rate","timeout":"5","timeoutUnits":"seconds","rate":"20","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":620,"y":880,"wires":[["d5ffe03.5a308a"]]},{"id":"a3e603c7.3ea1a8","type":"change","z":"727d366f.1fd3b","name":"Set TWC API Key here","rules":[{"t":"set","p":"twcapikey","pt":"flow","to":"<Paste your TWC API Key here>","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":480,"y":40,"wires":[[]]},{"id":"3f751ab2.37f3ae","type":"inject","z":"727d366f.1fd3b","name":"Init TWC API Key","topic":"","payload":"true","payloadType":"bool","repeat":"","crontab":"","once":true,"onceDelay":0.1,"x":190,"y":40,"wires":[["a3e603c7.3ea1a8"]]},{"id":"8483c94.42c1e38","type":"ui_group","z":"","name":"Alert Map","tab":"af2eb5ba.b61b","order":2,"disp":true,"width":"22","collapse":false},{"id":"6eaba9c5.b8be18","type":"ui_group","z":"","name":"Get Alerts","tab":"af2eb5ba.b61b","order":1,"disp":true,"width":"10","collapse":false},{"id":"af2eb5ba.b61b","type":"ui_tab","z":"","name":"Severe Weather Alert Headlines","icon":"dashboard","order":1,"disabled":false,"hidden":false}]