ForecastAlert Data Response
This object contains information about severe weather alert (where available). Like all
weather data, severe weather alerts are time-sensitive, but are provided with a start
and end time by regional authorities.
Note: Some severe weather alerts may have a start time set in the future; that is, the
alert may not be active "now", but targets a near-future time window.
All response parameters should be treated as optionally available.
Properties
latitude floatThe latitude of the request that generated the alert.
longitude floatThe longitude of the request that generated the alert.
title stringThe title of the severe weather alert.
areaDesc array of stringsAn array of text descriptions of affected areas.
severity string
The severity of the weather alert. The value "advisory" indicates that an individual should
be aware of potentially severe weather. The value "watch" indicates that an individual
should prepare for potentially severe weather. The value "warning" indicates that an
individual should take immediate action to protect themselves and others from potentially
severe weather.
timeStart integerThe UNIX time at which the alert begins. (GMT timezone)
timeExpires integerThe UNIX time at which the alert is expected to expire. (GMT timezone)
description stringThe text description directly provided from the regional authority about the alert.
uri stringA URI link from the regional authority that can be used to see more information.
Sample output
{
"latitude": 39.526,
"longitude": -119.813,
"title": "Red Flag Warning",
"areaDesc": [
"Northern Sierra Front - Carson City/Douglas/Storey/Southern Washoe/Eastern Lyon/Far Southern Lassen Counties",
"Southern Sierra Front - Alpine/Northern Mono/Southern Lyon/Western Mineral Counties"
],
"severity": "warning",
"timeStart": 1632765600,
"timeExpires": 1632830400,
"description": "...RED FLAG WARNING IN EFFECT FROM 11 AM MONDAY TO 5 AM PDT TUESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR THE SIERRA FRONT... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 11 AM Monday to 5 AM PDT Tuesday. The Fire Weather Watch is no longer in effect. * Changes...Upgraded the Fire Weather Watch. Extended timing. * Affected Area...Fire Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and and Western Mineral Counties. * Winds...Southwest to West 15 to 25 mph with gusts up to 40 mph. Wind prone areas could see gusts up to 50 mph Monday night. * Humidity...10-15% along and east of US-395. 15-20% west of US- 395. RH will increase Monday night to near 40%. * Duration...3 to 7 hours of critical conditions Monday afternoon. Gusty winds will last for over 18 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them.",
"uri": "https://alerts.weather.gov/cap/wwacapget.php?x=NV1261B9131370.RedFlagWarning.1261B930F0C0NV.REVRFWREV.0d02ac2ef7a3bbad215e02f9784626b5"
}