Alert archive / California / Heat Advisories in 2021
Heat Advisory 10, NWS Eureka, CA
NWS Eureka, CA issued this heat advisory at Sep 8, 2021, 7:50 AM PDT for Lake County, California. It took effect at Sep 8, 2021, 9:00 AM PDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Sep 8, 2021, 7:50 AM PDT (14:50 UTC)
- In effect from
- Sep 8, 2021, 9:00 AM PDT
- Expired
- Sep 8, 2021, 8:00 PM PDT
- In force
- 11 hr
- Issued by
- NWS Eureka, CA
County Lake County, CA
The radar
The Beale AFB radar (KBBX), 106 km from the middle of the area, began a volume at 14:54 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, 2.8 hours before the alert went out and 160 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
- 2456 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
513 WWUS76 KEKA 081450 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 750 AM PDT Wed Sep 8 2021 CAZ114-115-082300- /O.NEW.KEKA.HT.Y.0010.210908T1600Z-210909T0300Z/ Northern Lake-Southern Lake- 750 AM PDT Wed Sep 8 2021 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Temperatures up to 105 expected. * WHERE...Northern Lake and Southern Lake Counties. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses to occur. 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. && $$
2 follow-up statements
518 WWUS76 KEKA 082106 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 206 PM PDT Wed Sep 8 2021 CAZ114-115-090300- /O.CON.KEKA.HT.Y.0010.000000T0000Z-210909T0300Z/ Northern Lake-Southern Lake- 206 PM PDT Wed Sep 8 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Temperatures up to 105. * WHERE...Northern Lake and Southern Lake Counties. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
107 WWUS76 KEKA 090301 NPWEKA URGENT - WEATHER MESSAGE National Weather Service Eureka CA 801 PM PDT Wed Sep 8 2021 CAZ114-115-090415- /O.EXP.KEKA.HT.Y.0010.000000T0000Z-210909T0300Z/ Northern Lake-Southern Lake- 801 PM PDT Wed Sep 8 2021 ...HEAT ADVISORY WILL EXPIRE AT 8 PM THIS EVENING... High temperatures will gradually moderate through the rest of the work week. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 12:43 PM PDT | Fire Weather Watch | EKA | 21 hr |
Nearby
Heat Advisories in California, 2021Every heat advisory 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.