Alert archive / California / Heat Advisories in 2018
Heat Advisory 6, NWS Eureka, CA
NWS Eureka, CA issued this heat advisory at Jul 15, 2018, 4:01 AM PDT for 4 counties in California. It took effect at Jul 16, 2018, 11:00 AM PDT. It was in force for 3 days.
The area
The counties it named.
The facts
- Issued
- Jul 15, 2018, 4:01 AM PDT (11:01 UTC)
- In effect from
- Jul 16, 2018, 11:00 AM PDT
- Expired
- Jul 19, 2018, 9:00 PM PDT
- In force
- 3 days
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 60 km from the middle of the area, began a volume at 11:03 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 11.0 hours before the alert went out and 204 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
- 4254 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
329 WWUS76 KEKA 151101 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 401 AM PDT Sun Jul 15 2018 ...EXTENDED PERIOD OF HOT WEATHER FOR THE UPCOMING WEEK... .After a respite of slightly lower temperatures today, another stretch of very hot weather will begin Monday and 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. CAZ102-105-107-108-160015- /O.NEW.KEKA.HT.Y.0006.180716T1800Z-180717T1600Z/ /O.EXT.KEKA.EH.A.0001.180717T1600Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 401 AM PDT Sun Jul 15 2018 ...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 9 AM PDT TUESDAY... ...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 11 AM Monday to 9 AM PDT Tuesday. * 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 to high 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. && $$
10 follow-up statements
842 WWUS76 KEKA 152153 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 253 PM PDT Sun Jul 15 2018 ...EXTENDED PERIOD OF HOT WEATHER FOR THE UPCOMING WEEK... .After a respite of slightly lower temperatures today, another stretch of very hot weather will begin Monday and 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. CAZ102-105-107-108-161100- /O.CON.KEKA.HT.Y.0006.180716T1800Z-180717T1600Z/ /O.CON.KEKA.EH.A.0001.180717T1600Z-180719T0300Z/ Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 253 PM PDT Sun Jul 15 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 9 AM PDT TUESDAY... ...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... * 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 to high 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. && $$
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. && $$ CAZ110-111-113-170000- /O.NEW.KEKA.HT.Y.0007.180717T1800Z-180719T0300Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 356 AM PDT Mon Jul 16 2018 ...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT WEDNESDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 11 AM Tuesday to 8 PM PDT Wednesday. * LOCATIONS INCLUDE...Covelo...Ukiah...Potter Valley...Hopland... * TEMPERATURES...High temperatures between 103 and 108 with overnight lows in the 60s. * IMPACTS...Moderate risk of heat illness for those who are sensitive to heat or for those who are exposed to the sun and active for long durations. This heat will also be dangerous to anyone without proper hydration or adequate cooling. Heat stress is possible for livestock and outdoor pets. * FOR A DETAILED VIEW OF THE HAZARD AREA...visit http://www.wrh.noaa.gov/map PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$
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 14, 2:54 PM PDT, 13 hours 7 minutes earlier.
Area forecast discussion, Jul 14, 2:54 PM PDT, 13 hours 7 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
254 PM PDT Sat Jul 14 2018
.SYNOPSIS...Hot weather will continue for interior northwest
California through the weekend and into the upcoming week. Clouds
will be mainly localized to the immediate coast during the late
night and overnight hours, but isolated thunderstorms will be
possible over the interior mountains.
&&
.DISCUSSION...No major changes were made to the forecast package
this afternoon as heat and thunderstorms remain our focus.
Coastal stratus has mostly stayed confined to the immediate
coastline this afternoon, which has allowed coastal communities to
enjoy a nice summer afternoon. Farther east, skies have remained
mostly clear allowing temperatures to soar into the 90s and low
100s. There is some exception on cloud cover thought and it is
mostly over Trinity County where cumulus clouds have formed over
the higher terrain peaks. So far no showers or thunderstorms have
developed within these clouds, but there is still an isolated
chance for a thunderstorm or two this evening. The better chance
for storm activity over interior northwest California will be
tomorrow afternoon and evening as forcing and instability will be
slightly better. After that, the thunderstorm chances wane as we
head into next week. The main story will then be the excessive
heat. Temperatures may approach 105 around Ukiah and 110 along
the Trinity River Valley, particularly Tuesday and Wednesday
afternoon, if current model projections hold.
&&
.AVIATION...VFR conditions continue to prevail at all terminals
early this afternoon. Southerly winds along the coast have allowed
the stratus to move north of Cape Mendocino however it has remained
offshore so far this afternoon. Stratus will continue to move north
this evening eventually impacting CEC by early this evening with
IFR/LIFR ceilings and low visibilities. Stratus will also begin to
penetrate further inland as the afternoon and evening progresses as
the boundary layer moistens. Therefore, ACV will also drop down to
IFR/LIFR ceilings and reduced visibilities this evening. VFR
conditions will continue at UKI through this TAF cycle. /WCI
&&
.MARINE...Light to moderate southerly winds continue to impact
the nearshore waters this afternoon. These winds will become more
northerly tomorrow afternoon and evening, as the northerly winds
begin to increase across the outer waters. Currently the seas are
being primarily dominated by a fresh north-northwest swell of 5-7
feet at around 9 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 late
next week across the outer waters. /WCI
&&
.FIRE WEATHER...The forecast remains on track this afternoon as
temperatures have soared into the 90s and low 100s for Trinity
County. For the rest of interior northwest California, it is hot
as well; however, most areas are below 95 degrees except for a few
spots like Covelo, Ukiah, and Hoopa to name a few. Overall, this
hot and dry weather is forecast to persist into next week, with
tomorrow being least hot. 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.
Besides the heat, the other area of concern will be the chance for
thunderstorm activity on Sunday. Storms will likely develop in
Trinity County, as well as far northeastern Humboldt and Del
Norte, before tracking east- northeastward Sunday afternoon and
evening. I have opted to put a Red Flag Warning out for Trinity
County/Fire Weather Zone 283 as confidence is medium to high that
storms will develop over that area. After Sunday, the
thunderstorm threat will diminish early next week. /AAD/KR
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Red Flag Warning from 2 PM to 11 PM PDT Sunday for CAZ283.
Heat Advisory until midnight PDT tonight for CAZ102-105-107-108.
Excessive Heat Watch from Monday morning through Wednesday
evening for CAZ102-105-107-108.
NORTHWEST CALIFORNIA COASTAL WATERS...None.
&&
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For forecast zone information
see the forecast zone map online:
http://www.weather.gov/eureka/zonemap.pngHazardous weather outlook, Jul 14, 5:13 AM PDT, 22 hours 48 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 513 AM PDT Sat Jul 14 2018 CAZ102-105-107-108-151215- Del Norte Interior-Northern Humboldt Interior-Northern Trinity- Southern Trinity- 513 AM PDT Sat Jul 14 2018 ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO MIDNIGHT PDT TONIGHT... ...EXCESSIVE HEAT WATCH IN EFFECT FROM MONDAY MORNING THROUGH WEDNESDAY EVENING... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. A Heat Advisory is currently in effect. Temperatures will peak between 100 and 105 degrees across the hottest valleys this afternoon. Isolated thunderstorms are possible over the mountains this afternoon and this evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday. A Excessive Heat Watch is in effect Monday through Wednesday. A moderate to high heat risk will exist for those sensitive to heat- related illness Monday through Wednesday. In addition, isolated thunderstorms are expected Sunday afternoon and evening. Along with the hot and dry weather, this will promote an elevated fire weather threat. .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>113-151215- 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- 513 AM PDT Sat Jul 14 2018 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Sunday through Friday. 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.
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 2:34 PM PDT | Small Craft Advisory | EKA | 5 days | |
| Jul 15, 2:43 PM PDT | Special Weather Statement | EKA | Siskiyou | 32 min |
| Jul 15, 3:04 PM PDT | Special Weather Statement | EKA | Trinity | 41 min |
| Jul 15, 3:07 PM PDT | Special Weather Statement | EKA | Siskiyou | 53 min |
| Jul 15, 3:59 PM PDT | Special Weather Statement | EKA | Trinity | 46 min |
| Jul 15, 4:31 PM PDT | Areal Flood Advisory | EKA | Trinity | 3 hr |
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.