Alert archive / California / Heat Advisories in 2018
Heat Advisory 7, NWS Eureka, CA
NWS Eureka, CA issued this heat advisory at Jul 16, 2018, 3:56 AM PDT for Mendocino County, California. It took effect at Jul 17, 2018, 11:00 AM PDT. It was in force for 58 hr.
The area
The counties it named.
The facts
- Issued
- Jul 16, 2018, 3:56 AM PDT (10:56 UTC)
- In effect from
- Jul 17, 2018, 11:00 AM PDT
- Expired
- Jul 19, 2018, 9:00 PM PDT
- In force
- 58 hr
- Issued by
- NWS Eureka, CA
County Mendocino County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 139 km from the middle of the area, began a volume at 10:56 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Oakland, CA (KOAK), launched 00:00Z, 10.9 hours before the alert went out and 218 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2298 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
251 WWUS76 KEKA 161056 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 356 AM PDT Mon Jul 16 2018 ...EXTENDED PERIOD OF HOT WEATHER FOR THE UPCOMING WEEK... .Another stretch of very hot weather this week will peak Tuesday and Wednesday. A moderate to locally high heat risk will exist in many areas, which will be compounded by the duration of the heat event. High temperatures will break 105 degrees in the hottest locations, with warm overnight lows providing limited relief. CAZ102-105-107-108-170000- /O.CAN.KEKA.EH.A.0001.180717T1600Z-180719T0300Z/ /O.EXT.KEKA.HT.Y.0006.180716T1800Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 356 AM PDT Mon Jul 16 2018 ...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT WEDNESDAY... ...EXCESSIVE HEAT WATCH IS CANCELLED... The National Weather Service in Eureka has cancelled the Excessive Heat Watch. * LOCATIONS INCLUDE...Hayfork...Ruth...Orleans...Willow Creek...Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ110-111-113-170000- /O.NEW.KEKA.HT.Y.0007.180717T1800Z-180719T0300Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 356 AM PDT Mon Jul 16 2018 ...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT WEDNESDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 11 AM Tuesday to 8 PM PDT Wednesday. * LOCATIONS INCLUDE...Covelo...Ukiah...Potter Valley...Hopland... * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$
8 follow-up statements
430 WWUS76 KEKA 162028 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 128 PM PDT Mon Jul 16 2018 ...EXTENDED PERIOD OF HOT WEATHER FOR THE UPCOMING WEEK... .Hot and dry weather is forecast for this week with the warmest temperatures peaking on Tuesday and Wednesday. A moderate to locally high heat risk will exist in many areas, which will be compounded by the duration of the heat event. High temperatures will break 105 degrees in the hottest locations, with warm overnight lows providing limited relief. CAZ102-105-107-108-170430- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 128 PM PDT Mon Jul 16 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Orleans...Willow Creek... Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ110-111-113-170430- /O.CON.KEKA.HT.Y.0007.180717T1800Z-180719T0300Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 128 PM PDT Mon Jul 16 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Covelo...Ukiah...Potter Valley...Hopland... * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$
893 WWUS76 KEKA 170337 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 837 PM PDT Mon Jul 16 2018 ...EXTENDED PERIOD OF HOT WEATHER THIS WEEK... .Hot and dry weather is forecast for this week with the warmest temperatures occurring Tuesday and Wednesday. A moderate to locally high heat risk will exist in many areas, which will be compounded by the duration of the heat event. High temperatures from 100 to 110 are expected, with warm overnight lows providing limited relief to the heat. CAZ102-105-107-108-171645- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 837 PM PDT Mon Jul 16 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Gasquet...Orleans... Willow Creek...Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-111-113-171645- /O.CON.KEKA.HT.Y.0007.180717T1800Z-180719T0300Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 837 PM PDT Mon Jul 16 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Covelo...Ukiah...Hopland...Leggett... Laytonville...Willits. * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
732 WWUS76 KEKA 171047 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 347 AM PDT Tue Jul 17 2018 ...EXTENDED PERIOD OF HOT WEATHER THIS WEEK... .Hot and dry weather will continue for the bulk of this week with the highest temperatures coming today and Wednesday. A moderate to locally high risk for heat related illness will exist in many areas, which will be compounded by the duration of the heat event. High temperatures from 100 to 110 are expected, with warm overnight lows providing limited relief to the heat. CAZ102-105-107-108-180000- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 347 AM PDT Tue Jul 17 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Orleans... Willow Creek...Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 103 and 110 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-111-113-180000- /O.CON.KEKA.HT.Y.0007.180717T1800Z-180719T0300Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 347 AM PDT Tue Jul 17 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Covelo...Ukiah...Potter Valley...Hopland... * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
474 WWUS76 KEKA 172148 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 248 PM PDT Tue Jul 17 2018 ...HOT WEATHER THIS WEEK... .Hot and dry weather will continue for the bulk of this week with the highest temperatures coming today and Wednesday. Areas farther inland will remain hot on Thursday, while areas closer to the coast will see some minor cooling. Additional cooling is expected on Friday. CAZ107-108-181100- /O.EXT.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northern Trinity-Southern Trinity- 248 PM PDT Tue Jul 17 2018 ...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 106 through Thursday. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ111-181100- /O.EXT.KEKA.HT.Y.0007.000000T0000Z-180720T0400Z/ Northeastern Mendocino Interior- 248 PM PDT Tue Jul 17 2018 ...HEAT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Covelo. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s through Thursday. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-113-181100- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180719T0300Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 248 PM PDT Tue Jul 17 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Ukiah...Hopland...Leggett... Laytonville... Willits. * TEMPERATURES...High temperatures between 102 and 107 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-181100- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior- 248 PM PDT Tue Jul 17 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY... * LOCATIONS INCLUDE...Gasquet...Orleans...Willow ...Creek. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
091 WWUS76 KEKA 181052 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 352 AM PDT Wed Jul 18 2018 ...PERSISTENT HOT WEATHER CONTINUES... .Hot and dry weather will continue for the bulk of this week, with the hottest day of the week coming today. Areas farther inland will remain hot on Thursday, while areas closer to the coast will see some minor cooling. High temperatures will drop back into the 90s at most locations on Friday into the weekend. CAZ107-108-190000- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northern Trinity-Southern Trinity- 352 AM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Weaverville...Burnt Ranch...Trinity Center. * TEMPERATURES...High temperatures between 103 and 110 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ111-190000- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180720T0400Z/ Northeastern Mendocino Interior- 352 AM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Covelo. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-113-190000- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180719T0300Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 352 AM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Ukiah...Hopland...Laytonville. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-190000- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior- 352 AM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Gasquet...Orleans...Willow Creek. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
834 WWUS76 KEKA 182216 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 316 PM PDT Wed Jul 18 2018 ...PERSISTENT HOT WEATHER CONTINUES... .Hot and dry weather will continue for the bulk of this week, with the hottest day of the week coming today. Areas farther inland will remain hot on Thursday, while areas closer to the coast will see some minor cooling. High temperatures will drop back into the 90s at most locations on Friday into the weekend. CAZ107-108-191130- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northern Trinity-Southern Trinity- 316 PM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Hayfork...Ruth...Weaverville...Burnt Ranch...Big Bar...Del Loma...Trinity Center. * TEMPERATURES...High temperatures between 103 and 110 with overnight lows in the mid to upper 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ111-191130- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180720T0400Z/ Northeastern Mendocino Interior- 316 PM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY... * LOCATIONS INCLUDE...Covelo... * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the low to mid 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ110-113-190300- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180719T0300Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 316 PM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Ukiah...Hopland...Leggett... Laytonville... Willits. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ102-105-190300- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior- 316 PM PDT Wed Jul 18 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Gasquet...Orleans...Willow ...Creek. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
734 WWUS76 KEKA 191011 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 311 AM PDT Thu Jul 19 2018 CAZ110-113-192315- /O.EXA.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 311 AM PDT Thu Jul 19 2018 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect until 9 PM PDT this evening. * LOCATIONS INCLUDE...Leggett...Laytonville...Willits...Ukiah... Hopland. * TEMPERATURES...High temperatures between 100 and 110 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ107-108-192315- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northern Trinity-Southern Trinity- 311 AM PDT Thu Jul 19 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Hayfork...Ruth...Weaverville...Burnt Ranch...Big Bar...Del Loma...Trinity Center. * TEMPERATURES...High temperatures between 100 and 110 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ111-192315- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180720T0400Z/ Northeastern Mendocino Interior- 311 AM PDT Thu Jul 19 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Covelo. * TEMPERATURES...High temperatures between 100 and 110 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
713 WWUS76 KEKA 192218 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 318 PM PDT Thu Jul 19 2018 ...PERSISTENT HOT WEATHER CONTINUES... .Hot and dry weather will continue Saturday along the Trinity River Valley. High temperatures will reach 104 to perhaps near 109 roughly from Willow Creek to Weaverville along the Trinity River, with overnight lows in the mid to upper 60s. A Moderate Heat Risk is expected. Slightly cooler, but still warm, temperatures are expected over the weekend. CAZ107-201130- /O.NEW.KEKA.HT.Y.0008.180720T1900Z-180721T0400Z/ /O.CON.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Northern Trinity- 318 PM PDT Thu Jul 19 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM NOON TO 9 PM PDT FRIDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from noon to 9 PM PDT Friday. * LOCATIONS INCLUDE...Burnt Ranch...Big Bar...Del Loma...Helena. * TEMPERATURES...High temperatures between 103 and 109 with overnight lows in the mid to upper 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ108-110-113-200400- /O.CON.KEKA.HT.Y.0006.000000T0000Z-180720T0400Z/ Southern Trinity-Northwestern Mendocino Interior- Southeastern Mendocino Interior- 318 PM PDT Thu Jul 19 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Hayfork...Ruth...Leggett...Laytonville... Willits...Ukiah...Hopland. * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$ CAZ111-200400- /O.CON.KEKA.HT.Y.0007.000000T0000Z-180720T0400Z/ Northeastern Mendocino Interior- 318 PM PDT Thu Jul 19 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * LOCATIONS INCLUDE...Covelo... * TEMPERATURES...High temperatures between 102 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map $$
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this heat advisory went out at Jul 15, 2:44 PM PDT, 13 hours 12 minutes earlier.
Area forecast discussion, Jul 15, 2:44 PM PDT, 13 hours 12 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
244 PM PDT Sun Jul 15 2018
.SYNOPSIS...Scattered thunderstorms will continue to develop over
portions of Trinity County this afternoon. Otherwise hot and dry
conditions will be the rule for the next week across northwest
California. The exception will be at the coast, where cooler
temperatures will accompany nighttime and morning clouds and fog.
&&
.DISCUSSION...The forecast remains on track this afternoon with
persistent hot weather expected for the upcoming week in addition
to thunderstorms and fire weather concerns for this afternoon.
An upper-level trough continues to track eastward and into
northern California and southern Oregon this afternoon and has
already kick started thunderstorm development over Siskiyou and
northern Trinity counties. These conditions are expected to
continue into the early evening hours as instability and mid-
level moisture remain present. After that, favorable thunderstorm
conditions will start to wane but the main upper- level trough
will be passing by late tonight into early Monday morning. This
will need to be watched, as mid- level lapse rates will remain
quite steep. The GFS has a few signals that a stray shower or
thunderstorm may develop over northern Trinity County between
midnight and 3am, but overall drier air will be filtering in from
the west- southwest.
Aside from these afternoon storms, dry weather is expected across
our region through the upcoming week. A strong ridge of upper-
level high pressure will dominate the weather across much of the
western United States. This will be the main driver behind our hot
and dry weather, which will continue for inland northwest
California. Monday will likely see readings begin to rise, with a
Heat Advisory hoisted for that period. Tuesday and Wednesday are
projected to see the hottest temperatures, with model guidance
indicating values as high as 105 to 110 across the hottest valleys
of Trinity County. Will maintain the Excessive Heat Watch for
that period. Coastal areas will remain cool, under the influence
of marine air. As the interior heats up, and offshore high
pressure remains, northerly winds over the coastal waters will
start to pick up, but remain largely offshore. Expect a shallow
marine layer under the subsidence inversion, with clouds not
extending too far inland, and retreating from coastal areas most
afternoons through the week ahead. If anything, the trend may be
toward clear skies persisting along portions of the coast south of
Cape Mendocino and around Pt St George this week. KR/AAD
&&
.AVIATION...Coastal stratus has been very slow to clear today with
CEC still reporting IFR ceilings as of 2 pm. CEC should eventually
clear up for a short period of time this afternoon before the low
clouds and reduced visibilities moves back in this evening. Stratus
is also lingering just offshore at ACV therefore, IFR to LIFR
ceilings and visibilities will surge back into ACV this evening.
Across the interior, convective clouds are increasing in coverage
primarily in Trinity County with a few isolated thunderstorms
ongoing. VFR conditions will continue at UKI. /WCI
&&
.MARINE...Light southerly winds continue to impact the
nearshore waters this afternoon becoming more northerly tonight.
These northerly winds will begin to increase across the outer waters
tomorrow afternoon and a small craft advisory has been issued.
Currently, seas are being primarily dominated by a fresh north-
northwest swell of 5-7 feet at around 8 seconds. Northerly winds
will continue to increase as we go through the week which will also
allow the sea state to increase. Near gale force winds will be
possible by Wednesday across the outer waters. These strong winds
and steep seas will persist through the weekend. /WCI
&&
.FIRE WEATHER...The forecast remains on track this afternoon as
cumulus clouds and thunderstorms have developed over Trinity
County. Most of the storms have been confined to the Trinity Horn
(between Carrville and Callahan) with a few cells also popping up
between Junction City, Douglas City, and Hayfork. These conditions
will likely continue into the early evening hours with storms
tracking northeastward after they develop. The good news is that
storm chances will trend downward as we get closer to midnight
with maybe a few isolated showers or storms lingering until 2 or 3
AM.
Once the threat for thunderstorms comes to an end, our attention then
turns to the hot and dry weather conditions for the upcoming work
week. Temperatures of 100 to 110 and afternoon RH in the teens
can be expected for much of the interior Monday through Wednesday.
Winds will remain generally light and heavily terrain influenced,
with onshore flow in the afternoons and offshore flow at night.
/KR
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Red Flag Warning until 11 PM PDT this evening for CAZ283.
Heat Advisory from 11 AM Monday to 9 AM PDT Tuesday for CAZ102-
105-107-108.
Excessive Heat Watch from Tuesday morning through Wednesday
evening for CAZ102-105-107-108.
NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory from 9 AM Monday to 9 AM PDT Wednesday for
PZZ470.
Small Craft Advisory from 3 PM Monday to 9 AM PDT Wednesday for
PZZ475.
&&
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http://www.weather.gov/eureka/zonemap.pngHazardous weather outlook, Jul 15, 5:38 AM PDT, 22 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 538 AM PDT Sun Jul 15 2018 CAZ105-107-108-161245- Northern Humboldt Interior-Northern Trinity-Southern Trinity- 538 AM PDT Sun Jul 15 2018 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 9 AM PDT TUESDAY... ...EXCESSIVE HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. A Red Flag Warning is currently in effect. Scattered thunderstorms across Trinity County this afternoon will be capable of starting fires, with vegetation at critically dry levels. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A Heat Advisory is in effect for Monday A Excessive Heat Watch is in effect Tuesday through Wednesday. A moderate to high heat risk will exist for those sensitive to heat- related illness Monday through Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka. CAZ101-103-104-106-109>113-161245- Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Southern Humboldt Interior-Mendocino Coast- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 538 AM PDT Sun Jul 15 2018 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A moderate heat risk is expected Monday through Wednesday with temperatures 100 to 105 across the hotter interior valleys during the afternoon hours. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka. CAZ102-161245- Del Norte Interior- 538 AM PDT Sun Jul 15 2018 ...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 9 AM PDT TUESDAY... ...EXCESSIVE HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A Heat Advisory is in effect for Monday A Excessive Heat Watch is in effect Tuesday through Wednesday. A moderate to high heat risk will exist for those sensitive to heat- related illness Monday through Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For further details please refer to NOAA Weather Radio or weather.gov/eureka.
Nearby
Heat Advisories in California, 2018Every heat advisory in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.