Alert archive / California / Heat Advisories in 2017
Heat Advisory 2, NWS Eureka, CA
NWS Eureka, CA issued this heat advisory at Jun 22, 2017, 8:28 PM PDT for 4 counties in California. It took effect at Jun 22, 2017, 9:00 PM PDT. It was in force for 47 hr.
The area
The counties it named.
The facts
- Issued
- Jun 22, 2017, 8:28 PM PDT (03:28 UTC)
- In effect from
- Jun 22, 2017, 9:00 PM PDT
- Expired
- Jun 24, 2017, 7:42 PM PDT
- In force
- 47 hr
- 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 03:26 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, 3.5 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
- 3635 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
138 WWUS76 KEKA 230328 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 828 PM PDT Thu Jun 22 2017 ...Hot temperatures persist across Northwestern California... While some modest relief can be expected in near-coastal areas over the next two days, interior valley temperatures will remain hot through at least Saturday. Temperatures will become noticeably milder Sunday and beyond, with interior valley high temperatures closer to seasonal averages. CAZ105>108-110-111-113-231630- /O.CAN.KEKA.HT.Y.0001.000000T0000Z-170625T0300Z/ /O.NEW.KEKA.HT.Y.0002.170623T0400Z-170625T0300Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- 828 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT SATURDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect until 8 PM PDT Saturday. .TEMPERATURES...Valley temperatures in the upper 90s to low 100s. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. 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. && $$ CAZ102-231630- /O.CAN.KEKA.HT.Y.0001.000000T0000Z-170625T0300Z/ /O.NEW.KEKA.HT.Y.0002.170623T0400Z-170625T0300Z/ Del Norte Interior- 828 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT SATURDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect until 8 PM PDT Saturday. .TEMPERATURES...Valley temperatures in the mid 90s to near 100. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ101-104-112-230430- /O.CAN.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Coastal Del Norte-Southwestern Humboldt- Southwestern Mendocino Interior- 828 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Eureka has cancelled the Heat Advisory. $$
4 follow-up statements
672 WWUS76 KEKA 232243 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 343 PM PDT Fri Jun 23 2017 ...Hot temperatures persist across Northwestern California... While some modest relief can be expected in near-coastal areas over the next two days, interior valley temperatures will remain hot through at least Saturday. Temperatures will become noticeably milder Sunday and beyond, with interior valley high temperatures closer to seasonal averages. CAZ105>108-110-111-113-241145- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- 343 PM PDT Fri Jun 23 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY... .TEMPERATURES...Valley temperatures in the upper 90s to low 100s. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ102-241145- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Del Norte Interior- 343 PM PDT Fri Jun 23 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY... .TEMPERATURES...Valley temperatures in the mid 90s to near 100. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. 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. $$
581 WWUS76 KEKA 241139 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 439 AM PDT Sat Jun 24 2017 ...Hot temperatures persist across Northwestern California... While some modest relief can be expected in near-coastal areas today, interior valley temperatures will remain hot today. Temperatures will become noticeably milder Sunday and beyond, with interior valley high temperatures closer to seasonal averages. CAZ105>108-110-111-113-250300- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- 439 AM PDT Sat Jun 24 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM THIS EVENING... .TEMPERATURES...Valley temperatures in the upper 90s to lower 100s. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ102-250300- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Del Norte Interior- 439 AM PDT Sat Jun 24 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM THIS EVENING... .TEMPERATURES...Valley temperatures in the mid 90s to near 100. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. 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. $$
671 WWUS76 KEKA 242221 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 321 PM PDT Sat Jun 24 2017 ...Hot temperatures persist across Northwestern California... Hot temperatures will gradually begin to cool Sunday, although interior valleys of Trinity county will continue to see afternoon readings approaching 100 degrees. Temperatures will fall to near normal Monday and beyond, providing more extended relief from the heat. CAZ105>108-110-111-113-250300- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- 321 PM PDT Sat Jun 24 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures reaching the mid 90s to near 110. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ102-250300- /O.CON.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Del Norte Interior- 321 PM PDT Sat Jun 24 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the mid 90s to near 100. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. 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. $$
719 WWUS76 KEKA 250242 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 742 PM PDT Sat Jun 24 2017 CAZ102-105>108-110-111-113-250345- /O.CAN.KEKA.HT.Y.0002.000000T0000Z-170625T0300Z/ Del Norte Interior-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southeastern Mendocino Interior- 742 PM PDT Sat Jun 24 2017 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Eureka has cancelled the Heat Advisory. Temperatures will cool overnight. A Heat Advisory may be necessary for Trinity County tomorrow as high temperatures are forecast to be in the upper 90s to the low 100s. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 3:40 PM PDT | Coastal Flood Advisory | EKA | Humboldt, Mendocino | 10 hr |
Nearby
Heat Advisories in California, 2017Every heat advisory in 2017
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.