Rangeland Fire Danger Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
717 FNCA62 TJSJ 200848 RFDSJU PRZ014>016-018-019-022-024>027-VIZ001-002-202100- Fire Danger Statement National Weather Service San Juan PR 448 AM AST Mon Jul 20 2026 ...ELEVATED FIRE WEATHER CONDITIONS EXPECTED ACROSS PORTIONS OF PUERTO RICO AND SMALLER ISLANDS TODAY... A Fire Danger Statement is in effect for portions of the southern coastal plains and hills, as well as the eastern and northern coastal plains of Puerto Rico and smaller islands due to favorable conditions for rapid fire spread. Prolonged rainfall deficits, abnormal to severe drought conditions, and critically dry fuels continue, with Keetch-Byram Drought Index (KBDI) values remaining above critical thresholds. Seven-day rainfall totals remain below 10 percent of normal across most of Puerto Rico, with some areas below 5 percent, while 30-day rainfall totals remain below 25 percent, including below 10 percent across portions of the southern coastal plains. Relative humidity values are forecast to fall into the upper 40s to lower 50s this afternoon across southern Puerto Rico and adjacent lower elevations. Although winds are expected to be slightly weaker than recent days, easterly winds of 10 to 15 mph with higher gusts will continue to support elevated fire weather conditions. Any fires that develop could spread rapidly through dry vegetation. Fire weather conditions will continue to be monitored closely, and a Red Flag Warning may be required if conditions become more favorable for rapid fire growth. Residents and visitors are urged to avoid outdoor burning and exercise extreme caution with open flames, discarded cigarettes, or any activity capable of producing sparks. Fire and emergency officials should be aware that weather conditions are becoming more conducive for the ignition and spread of wildfires. Fire danger statements are issued when fire weather conditions are approaching, but not meeting or exceeding, Red Flag Warning criteria. $$