Alert archive / California / Excessive Heat Watches in 2020
Excessive Heat Watch 2, NWS Eureka, CA
NWS Eureka, CA issued this excessive heat watch at Aug 12, 2020, 2:20 PM PDT for 5 counties in California. It took effect at Aug 14, 2020, 12:00 PM PDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Aug 12, 2020, 2:20 PM PDT (21:20 UTC)
- In effect from
- Aug 14, 2020, 12:00 PM PDT
- Expired
- Aug 13, 2020, 11:23 AM PDT
- In force
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Lake County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 75 km from the middle of the area, began a volume at 21:24 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 12:00Z, 9.3 hours before the alert went out and 233 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
- 2141 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this excessive heat watch 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 excessive heat watch went out at Aug 12, 4:27 AM PDT, 9 hours 53 minutes earlier.
Area forecast discussion, Aug 12, 4:27 AM PDT, 9 hours 53 minutes before
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</html>Hazardous weather outlook, Aug 12, 3:45 AM PDT, 10 hours 35 minutes before
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</html>The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 2:23 AM PDT | Gale Watch | EKA | 13 hr | |
| Aug 12, 3:08 PM PDT | Hazardous Seas Warning | EKA | 42 hr |
Nearby
Excessive Heat Watches in California, 2020Every excessive heat watch in 2020
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.