Alert archive / California / Heat Advisories in 2017
Heat Advisory 1, NWS Eureka, CA
NWS Eureka, CA issued this heat advisory at Jun 16, 2017, 3:16 AM PDT for 4 counties in California. It took effect at Jun 18, 2017, 10:00 AM PDT. It was in force for 4 days.
The area
The counties it named.
The facts
- Issued
- Jun 16, 2017, 3:16 AM PDT (10:16 UTC)
- In effect from
- Jun 18, 2017, 10:00 AM PDT
- Expired
- Jun 22, 2017, 8:28 PM PDT
- In force
- 4 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 10:15 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, 10.3 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
- 1442 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
220 WWUS76 KEKA 161016 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 316 AM PDT Fri Jun 16 2017 CAZ104-107-108-110>113-162330- /O.NEW.KEKA.HT.Y.0001.170618T1700Z-170619T0200Z/ Southwestern Humboldt-Northern Trinity-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 316 AM PDT Fri Jun 16 2017 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 7 PM PDT SUNDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 10 AM to 7 PM PDT Sunday. 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. && $$
16 follow-up statements
933 WWUS76 KEKA 162219 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 319 PM PDT Fri Jun 16 2017 CAZ104-162330- /O.CAN.KEKA.HT.Y.0001.170618T1700Z-170619T0200Z/ Southwestern Humboldt- 319 PM PDT Fri Jun 16 2017 ...HEAT ADVISORY IS CANCELLED... Southwest Humboldt will remain quite hot this weekend through next week with some isolated valleys forecast to reach the 80s and 90s. Those sensitive to the heat should still take extra precautions. && $$ CAZ107-108-110>113-171130- /O.EXT.KEKA.HT.Y.0001.170618T1700Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 319 PM PDT Fri Jun 16 2017 ...HEAT ADVISORY NOW IN EFFECT FROM 10 AM SUNDAY TO 11 PM PDT TUESDAY... .TEMPERATURES...Some of the hottest valleys will reach well into 90s and mid 100s. .IMPACTS...Moderate risk for those who are sensitive to heat, especially those without effective cooling and/or 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. && $$
062 WWUS76 KEKA 162223 CCA NPWEKA URGENT - WEATHER MESSAGE...CORRECTED National Weather Service Eureka CA 323 PM PDT Fri Jun 16 2017 CAZ104-162330- /O.CAN.KEKA.HT.Y.0001.170618T1700Z-170619T0200Z/ Southwestern Humboldt- 323 PM PDT Fri Jun 16 2017 ...HEAT ADVISORY IS CANCELLED... Southwest Humboldt will remain quite hot this weekend through next week with some isolated valleys forecast to reach the 80s and 90s. Those sensitive to the heat should still take extra precautions. && $$ CAZ107-108-110>113-171130- /O.COR.KEKA.HT.Y.0001.170618T1700Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 323 PM PDT Fri Jun 16 2017 ...HEAT ADVISORY NOW IN EFFECT FROM 10 AM SUNDAY TO 11 PM PDT TUESDAY... .TEMPERATURES...Some of the hottest valleys will reach well into 90s and low 100s. .IMPACTS...Moderate risk for those who are sensitive to heat, especially those without effective cooling and/or 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. && $$
728 WWUS76 KEKA 171006 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 306 AM PDT Sat Jun 17 2017 CAZ107-108-110>113-172315- /O.CON.KEKA.HT.Y.0001.170618T1700Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 306 AM PDT Sat Jun 17 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SUNDAY TO 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$
893 WWUS76 KEKA 172046 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 146 PM PDT Sat Jun 17 2017 CAZ107-108-110>113-181000- /O.CON.KEKA.HT.Y.0001.170618T1700Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 146 PM PDT Sat Jun 17 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM SUNDAY TO 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. && $$
102 WWUS76 KEKA 180902 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 202 AM PDT Sun Jun 18 2017 CAZ107-108-110>113-182215- /O.CON.KEKA.HT.Y.0001.170618T1700Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 202 AM PDT Sun Jun 18 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$
278 WWUS76 KEKA 182045 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 145 PM PDT Sun Jun 18 2017 CAZ107-108-110>113-191200- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southwestern Mendocino Interior- Southeastern Mendocino Interior- 145 PM PDT Sun Jun 18 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. && $$
941 WWUS76 KEKA 190922 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 222 AM PDT Mon Jun 19 2017 CAZ110>113-192230- /O.EXT.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 222 AM PDT Mon Jun 19 2017 ...HEAT ADVISORY NOW IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids,stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ107-108-192230- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity- 222 AM PDT Mon Jun 19 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. && $$
138 WWUS76 KEKA 192017 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 117 PM PDT Mon Jun 19 2017 CAZ107-108-201215- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity- 117 PM PDT Mon Jun 19 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT TUESDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ110>113-201215- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 117 PM PDT Mon Jun 19 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. 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. && $$
110 WWUS76 KEKA 200924 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 224 AM PDT Tue Jun 20 2017 CAZ107-108-202230- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity- 224 AM PDT Tue Jun 20 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ110>113-202230- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 224 AM PDT Tue Jun 20 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. 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. && $$
540 WWUS76 KEKA 202026 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 126 PM PDT Tue Jun 20 2017 CAZ107-108-210600- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity- 126 PM PDT Tue Jun 20 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...A slight to moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. && $$ CAZ110>113-210700- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 126 PM PDT Tue Jun 20 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. 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. && $$
213 WWUS76 KEKA 210513 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 1013 PM PDT Tue Jun 20 2017 CAZ107-108-210615- /O.CAN.KEKA.HT.Y.0001.000000T0000Z-170621T0600Z/ Northern Trinity-Southern Trinity- 1013 PM PDT Tue Jun 20 2017 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Eureka has cancelled the Heat Advisory. $$ CAZ110>113-211815- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 1013 PM PDT Tue Jun 20 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. 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. $$
239 WWUS76 KEKA 210814 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 114 AM PDT Wed Jun 21 2017 CAZ107-108-212115- /O.EXB.KEKA.HT.Y.0001.170622T1300Z-170623T0600Z/ Northern Trinity-Southern Trinity- 114 AM PDT Wed Jun 21 2017 ...HEAT ADVISORY IN EFFECT FROM 6 AM TO 11 PM PDT THURSDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 6 AM to 11 PM PDT Thursday. .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ110>113-212115- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 114 AM PDT Wed Jun 21 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate 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. 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. $$
091 WWUS76 KEKA 212257 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 357 PM PDT Wed Jun 21 2017 CAZ104>106-221200- /O.EXB.KEKA.HT.Y.0001.170622T1600Z-170623T0600Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior- 357 PM PDT Wed Jun 21 2017 ...HEAT ADVISORY IN EFFECT FROM 9 AM TO 11 PM PDT THURSDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 9 AM to 11 PM PDT Thursday. .TEMPERATURES...Valley temperatures in the mid 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ101-102-221200- /O.EXB.KEKA.HT.Y.0001.170622T1600Z-170623T0600Z/ Coastal Del Norte-Del Norte Interior- 357 PM PDT Wed Jun 21 2017 ...HEAT ADVISORY IN EFFECT FROM 9 AM TO 11 PM PDT THURSDAY... The National Weather Service in Eureka has issued a Heat Advisory...which is in effect from 9 AM to 11 PM PDT Thursday. .TEMPERATURES...Interior valley temperatures in the 90s. Coastal areas near Smith River will see high temperatures into the lower to mid 90s. Temperatures will be cooler near Crescent City. .IMPACTS...Moderate 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. 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. $$ CAZ107-108-221200- /O.EXT.KEKA.HT.Y.0001.170622T1600Z-170623T0600Z/ Northern Trinity-Southern Trinity- 357 PM PDT Wed Jun 21 2017 ...HEAT ADVISORY NOW IN EFFECT FROM 9 AM TO 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the 90s to low 100s. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ110>113-221200- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 357 PM PDT Wed Jun 21 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THURSDAY... .TEMPERATURES...Valley temperatures in the mid 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. 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. $$
453 WWUS76 KEKA 220950 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 250 AM PDT Thu Jun 22 2017 CAZ110>113-222300- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 250 AM PDT Thu Jun 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the mid 90s to low 100s. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ104>108-222300- /O.CON.KEKA.HT.Y.0001.170622T1600Z-170623T0600Z/ Southwestern Humboldt-Northern Humboldt Interior- Southern Humboldt Interior-Northern Trinity-Southern Trinity- 250 AM PDT Thu Jun 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 11 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the mid 90s to low 100s. .IMPACTS...Moderate 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. 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. $$ CAZ101-102-222300- /O.CON.KEKA.HT.Y.0001.170622T1600Z-170623T0600Z/ Coastal Del Norte-Del Norte Interior- 250 AM PDT Thu Jun 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 11 PM PDT THIS EVENING... .TEMPERATURES...Interior valley temperatures in the 90s. Coastal areas near Smith River will see high temperatures in the lower to mid 90s. Temperatures will be cooler near Crescent City. .IMPACTS...Moderate risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$
233 WWUS76 KEKA 222215 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 315 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>108-110-111-113-231115- /O.EXT.KEKA.HT.Y.0001.000000T0000Z-170625T0300Z/ Northern Humboldt Interior-Southern Humboldt Interior- Northern Trinity-Southern Trinity-Northwestern Mendocino Interior- Northeastern Mendocino Interior-Southeastern Mendocino Interior- 315 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY NOW 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. 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. $$ CAZ102-231115- /O.EXT.KEKA.HT.Y.0001.000000T0000Z-170625T0300Z/ Del Norte Interior- 315 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT SATURDAY... .TEMPERATURES...Valley temperatures in the mid 90s to near 100. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$ CAZ104-112-230600- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Southwestern Humboldt-Southwestern Mendocino Interior- 315 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... .TEMPERATURES...Valley temperatures in the mid 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. 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. $$ CAZ101-230600- /O.CON.KEKA.HT.Y.0001.000000T0000Z-170623T0600Z/ Coastal Del Norte- 315 PM PDT Thu Jun 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... .TEMPERATURES...Low to upper 90s...particularly near Smith River. Crescent City will remain cool. .IMPACTS...Moderate to high risk of heat illness for those who are sensitive to heat, especially those without effective cooling and adequate hydration. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. Drink plenty of fluids, stay in an air-conditioned room,stay out of the sun,and check up on relatives and neighbors. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 911. $$
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. $$
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 Jun 15, 9:26 PM PDT, 5 hours 50 minutes earlier.
Area forecast discussion, Jun 15, 9:26 PM PDT, 5 hours 50 minutes before
AREA FORECAST DISCUSSION National Weather Service Eureka CA 926 PM PDT Thu Jun 15 2017 .SYNOPSIS... Mild temperatures can be expected through Friday, but substantial heat is on the way for Sunday and beyond. Residents across the interior valleys can expect to see several days of triple digit heat and should prepare accordingly. && .AVIATION UPDATE... Ceilings have deteriorated tonight at ACV and CEC more than was expected. IFR conditions have been occurring at both airports with CEC experiencing LIFR conditions off and on. ACV may also experience periods of LIFR later tonight into the early morning. Expect these conditions to continue through sunrise tomorrow and then quickly improve as surface winds increase. /WCI && .PREV DISCUSSION... /issued 327 PM PDT Thu Jun 15 2017/ SYNOPSIS... Mild temperatures can be expected through Friday, but substantial heat is on the way for Sunday and beyond. Residents across the interior valleys can expect to see several days of triple digit heat and should prepare accordingly. DISCUSSION... A weak passing front will move through the Pacific Northwest tonight bringing light rain to the Oregon coast. This front will sag into far northern California bringing chances for rain to Del Norte County and far northern Humboldt County into Friday morning. Any rain will be very light with likely only sprinkles in the Humboldt Bay area. Temperatures will remain seasonable through Friday. A notable pattern change will begin Saturday as high pressure to our south gradually builds northward. This building high pressure will result in steadily increasing temperatures for interior areas, and by Sunday widespread triple digit readings can be expected throughout the interior valleys of Mendocino, Trinity, and perhaps even portions of Humboldt county. Some of the hottest areas can expect to see temperatures in the 103-108 degree range, particularly near Ukiah, Weaverville, Covelo, and surrounding low elevation valleys. This will be within striking distance of record high values in Ukiah and perhaps other locations as well, and is generally 15 to 20 degrees above normal for mid-June. While there will be minor fluctuations in high temperatures, this heat will likely last into at least the middle of the week and possibly beyond. Given that much of the region will see the warmest temperatures of the season so far, and the extended duration of well above normal heat expected, future forecasts will likely require heat advisories for portions of these areas. Will hold off for now given that the onset of the worst heat is not expected until Sunday, and there is still uncertainty as to the duration of truly impactful heat. Fortunately, high pressure and a relatively dry airmass will allow for efficient cool air drainage in the mountain valleys overnight, a process which should help provide overnight relief and mitigate heat impacts somewhat. Along the immediate coast, a stubborn marine layer inversion will likely keep temperatures from climbing too far above normal, and afternoon highs will likely only reach the mid to perhaps upper 60s even as interior temperatures soar. In fact, the warmest temperatures along the immediate coast may actually occur through Saturday, and especially Saturday given the presence of slight offshore flow. Meanwhile, while most areas will remain dry, the expected strong heating combined with marginal moisture may generate enough instability to result in a few high-based convective showers across the interior mountains Sunday and beyond. However, shower chances are much more substantial across the Sierra Nevada where moisture will be more plentiful. /BRC/RPA AVIATION... A profusion of mostly mid level clouds continued to stream into the region today while gradually spreading south and eastward. These clouds correspond with an upper level trough...and the associated (weak warm) frontal system brushing across the northernmost forecast area. Light rain was reported at Crescent City's airport on the 9:00 am report...as well as light fog. Model guidance is indicating that the bulk of precipitation will be mostly confined to Northern Humboldt and Del Norte Counties. Around 2 pm, light sprinkles were reported in vicinity of ACV. The ASOS reported a trace. Although expecting nominal amounts of rain, CEC's terminal will be the greater recipient through afternoon and evening. Models are hinting at somewhat deteriorating cloud heights overnight. There is some room for skepticism that cigs will drop to low IFR/LIFR though. MARINE... Split flow with light southerlies north of Cape Mendocino and light northerlies to the south will persist into Friday as a weak front moves through the Pacific Northwest. Upper level ridging will re- establish itself over the western U.S. beginning Friday afternoon with surface high pressure building over the eastern Pacific. This will allow northerly winds to once again expand over the entire waters and intensify over the weekend into early next week as the thermal trough strengthens over interior California. Small craft conditions are certain across at least the outer waters by Saturday night or Sunday, with the potential for gales Sunday into Monday. A further ramp up in the winds may develop mid to late next week. /RPA && .EKA WATCHES/WARNINGS/ADVISORIES... CA...None. NORTHWEST CALIFORNIA COASTAL WATERS...None. && Visit us at http://www.weather.gov/eureka Follow us on Facebook and Twitter at: http://www.facebook.com/NWSEureka http://www.twitter.com/nwseureka For forecast zone information see the forecast zone map online: http://www.weather.gov/eureka/zonemap.png
Hazardous weather outlook, Jun 16, 3:14 AM PDT, 2 minutes before
Hazardous Weather Outlook National Weather Service Eureka CA 314 AM PDT Fri Jun 16 2017 CAZ104-107-108-110>113-171015- Southwestern Humboldt-Northern Trinity-Southern Trinity- Northwestern Mendocino Interior-Northeastern Mendocino Interior- Southwestern Mendocino Interior-Southeastern Mendocino Interior- 314 AM PDT Fri Jun 16 2017 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 7 PM PDT SUNDAY... This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. High temperatures will peak from the mid 90s to around 107 degrees during Sunday, with hot daytime highs persisting into the middle of next week. A heat advisory has been issued from late Sunday morning through Sunday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CAZ101>103-105-106-109-171015- Coastal Del Norte-Del Norte Interior-Northern Humboldt Coast- Northern Humboldt Interior-Southern Humboldt Interior- Mendocino Coast- 314 AM PDT Fri Jun 16 2017 This hazardous weather outlook is for northwest California. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 3:23 AM PDT | Small Craft Advisory | EKA | 8 days | |
| Jun 16, 3:10 PM PDT | Gale Watch | EKA | 24 hr | |
| Jun 16, 3:10 PM PDT | Small Craft Advisory | EKA | 6 days |
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.