Alert archive / California / Excessive Heat Warnings in 2021
Excessive Heat Warning 3, NWS Eureka, CA
NWS Eureka, CA issued this excessive heat warning at Jul 7, 2021, 12:08 PM PDT for Lake County, Mendocino County, Trinity County, California. It took effect at Jul 9, 2021, 12:00 PM PDT. It was in force for 3 days. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 2021, 12:08 PM PDT (19:08 UTC)
- In effect from
- Jul 9, 2021, 12:00 PM PDT
- Expired
- Jul 12, 2021, 8:00 PM PDT
- In force
- 3 days
- Issued by
- NWS Eureka, CA
Counties Lake County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Beale AFB radar (KBBX), 128 km from the middle of the area, began a volume at 19:07 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 12:00Z, 7.1 hours before the alert went out and 235 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
- 1141 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
648 WWUS76 KEKA 071908 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1208 PM PDT Wed Jul 7 2021 CAZ107-108-110-111-113>115-080315- /O.UPG.KEKA.EH.A.0004.210709T1900Z-210712T0700Z/ /O.NEW.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 1208 PM PDT Wed Jul 7 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON FRIDAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Northern Trinity, Southern Trinity, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Southeastern Mendocino Interior, Northern Lake and Southern Lake Counties. * WHEN...From noon Friday to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
18 follow-up statements
831 WWUS76 KEKA 080301 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 801 PM PDT Wed Jul 7 2021 CAZ107-108-110-111-113>115-081115- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 801 PM PDT Wed Jul 7 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Northern Trinity, Southern Trinity, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Southeastern Mendocino Interior, Northern Lake and Southern Lake Counties. * WHEN...From noon Friday to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
734 WWUS76 KEKA 080912 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 212 AM PDT Thu Jul 8 2021 CAZ107-108-110-111-113>115-081715- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 212 AM PDT Thu Jul 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...From noon Friday to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
778 WWUS76 KEKA 081327 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 627 AM PDT Thu Jul 8 2021 CAZ107-108-110-111-113>115-082130- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 627 AM PDT Thu Jul 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...From noon Friday to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
152 WWUS76 KEKA 082133 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 233 PM PDT Thu Jul 8 2021 CAZ107-108-110-111-113>115-090545- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 233 PM PDT Thu Jul 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 111 expected. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...From noon Friday to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
582 WWUS76 KEKA 090547 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1047 PM PDT Thu Jul 8 2021 CAZ107-108-110-111-113>115-091400- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 1047 PM PDT Thu Jul 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 111 expected. * WHERE...Trinity County, Lake County, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior. * WHEN...From noon Friday to midnight Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. $$
491 WWUS76 KEKA 091034 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 334 AM PDT Fri Jul 9 2021 CAZ107-108-110-111-113>115-091845- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 334 AM PDT Fri Jul 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...From noon today to midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
697 WWUS76 KEKA 091831 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1131 AM PDT Fri Jul 9 2021 CAZ107-108-110-111-113>115-100245- /O.CON.KEKA.EH.W.0003.210709T1900Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 1131 AM PDT Fri Jul 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110 expected. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
793 WWUS76 KEKA 100344 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 844 PM PDT Fri Jul 9 2021 CAZ107-108-110-111-113>115-101215- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 844 PM PDT Fri Jul 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 111. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
060 WWUS76 KEKA 101027 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 327 AM PDT Sat Jul 10 2021 CAZ107-108-110-111-113>115-101830- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 327 AM PDT Sat Jul 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 111. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
217 WWUS76 KEKA 101829 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1129 AM PDT Sat Jul 10 2021 CAZ107-108-110-111-113>115-110230- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 1129 AM PDT Sat Jul 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 111. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
013 WWUS76 KEKA 110215 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 715 PM PDT Sat Jul 10 2021 CAZ107-108-110-111-113>115-111100- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 715 PM PDT Sat Jul 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT SUNDAY NIGHT... * WHAT...Dangerously hot conditions with temperatures up to 112. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT Sunday night. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
286 WWUS76 KEKA 111016 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 316 AM PDT Sun Jul 11 2021 CAZ107-108-110-111-113>115-111830- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 316 AM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT tonight. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
232 WWUS76 KEKA 111814 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1114 AM PDT Sun Jul 11 2021 CAZ107-108-110-111-113>115-120215- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- Northern Lake-Southern Lake- 1114 AM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT... * WHAT...Dangerously hot conditions with temperatures up to 110. * WHERE...Southern Trinity, Southeastern Mendocino Interior, Northwestern Mendocino Interior, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until midnight PDT tonight. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
578 WWUS76 KEKA 120211 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 711 PM PDT Sun Jul 11 2021 CAZ107-108-111-114-115-121200- /O.EXT.KEKA.EH.W.0003.000000T0000Z-210713T0300Z/ Northern Trinity-Southern Trinity-Northeastern Mendocino Interior- Northern Lake-Southern Lake- 711 PM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT MONDAY... * WHAT...Dangerously hot conditions with temperatures up to 108. * WHERE...Southern Trinity, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$ CAZ110-113-120700- /O.CON.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 711 PM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT... * WHAT...Hot conditions through this evening. * WHERE...Southeastern Mendocino Interior and Northwestern Mendocino Interior Counties. * WHEN...Until midnight PDT tonight. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
112 WWUS76 KEKA 120646 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1146 PM PDT Sun Jul 11 2021 CAZ110-113-120800- /O.EXP.KEKA.EH.W.0003.000000T0000Z-210712T0700Z/ Northwestern Mendocino Interior-Southeastern Mendocino Interior- 1146 PM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT MIDNIGHT PDT TONIGHT... $$ CAZ107-108-111-114-115-121500- /O.CON.KEKA.EH.W.0003.000000T0000Z-210713T0300Z/ Northern Trinity-Southern Trinity-Northeastern Mendocino Interior- Northern Lake-Southern Lake- 1146 PM PDT Sun Jul 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT MONDAY... * WHAT...Dangerously hot conditions with temperatures up to 106. * WHERE...Southern Trinity, Northeastern Mendocino Interior, Northern Lake, Southern Lake and Northern Trinity Counties. * WHEN...Until 8 PM PDT Monday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
151 WWUS76 KEKA 121029 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 329 AM PDT Mon Jul 12 2021 CAZ107-108-111-114-115-121830- /O.CON.KEKA.EH.W.0003.000000T0000Z-210713T0300Z/ Northern Trinity-Southern Trinity-Northeastern Mendocino Interior- Northern Lake-Southern Lake- 329 AM PDT Mon Jul 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Dangerously hot conditions with temperatures up to 106. * WHERE...Southern Trinity, Northeastern Mendocino Interior, Northern Trinity, Northern Lake and Southern Lake Counties. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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 9 1 1. && $$
905 WWUS76 KEKA 121820 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1120 AM PDT Mon Jul 12 2021 CAZ107-108-111-114-115-130230- /O.CON.KEKA.EH.W.0003.000000T0000Z-210713T0300Z/ Northern Trinity-Southern Trinity-Northeastern Mendocino Interior- Northern Lake-Southern Lake- 1120 AM PDT Mon Jul 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Dangerously hot conditions with temperatures up to 106. * WHERE...Southern Trinity, Northeastern Mendocino Interior, Northern Trinity, Northern Lake and Southern Lake Counties. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
925 WWUS76 KEKA 130235 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 735 PM PDT Mon Jul 12 2021 CAZ107-108-111-114-115-130345- /O.EXP.KEKA.EH.W.0003.000000T0000Z-210713T0300Z/ Northern Trinity-Southern Trinity-Northeastern Mendocino Interior- Northern Lake-Southern Lake- 735 PM PDT Mon Jul 12 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:58 PM PDT | Small Craft Advisory | EKA | 21 days |
Nearby
Excessive Heat Warnings in California, 2021Every excessive heat warning in 2021
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.