I got this alert, hope it helps
Piston state: at 8:57 P.M. on 7/31 saying [[adminDistrict:Puerto Rico, adminDistrictCode:PR, areaId:PRZ005, areaName:North Central, areaTypeCode:Z, categories:[[category:Met, categoryCode:2]], certainty:Unknown, certaintyCode:5, countryCode:US, countryName:UNITED STATES OF AMERICA, detailKey:8f26c8d4-0199-3500-84f1-695191abc89b, disclaimer:null, effectiveTimeLocal:null, effectiveTimeLocalTimeZone:null, eventDescription:Flash Flood Watch, eventTrackingNumber:1, expireTimeLocal:2019-07-31T21:00:00-04:00, expireTimeLocalTimeZone:AST, expireTimeUTC:1564621200, flood:null, headlineText:Flash Flood Watch until WED 9:00 PM AST, ianaTimeZone:America/Puerto_Rico, identifier:5d1280a865e4eff46be9e2825c809f2d, issueTimeLocal:2019-07-31T20:47:00-04:00, issueTimeLocalTimeZone:AST, latitude:00.00, longitude:-00.00
, messageType:New, messageTypeCode:1, officeAdminDistrict:Puerto Rico, officeAdminDistrictCode:PR, officeCode:TJSJ, officeCountryCode:US, officeName:San Juan, onsetTimeLocal:null, onsetTimeLocalTimeZone:null, phenomena:FF, processTimeUTC:1564620431, productIdentifier:FFA, responseTypes:[[responseType:Avoid, responseTypeCode:5]], severity:Moderate, severityCode:3, significance:A, source:National Weather Service, urgency:Unknown, urgencyCode:5]]