Alert archive / California / Excessive Heat Watches in 2021
Excessive Heat Watch 2, NWS Los Angeles, CA
NWS Los Angeles, CA issued this excessive heat watch at Jun 24, 2021, 1:59 PM PDT for Los Angeles County, Santa Barbara County, California. It took effect at Jun 27, 2021, 10:00 AM PDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jun 24, 2021, 1:59 PM PDT (20:59 UTC)
- In effect from
- Jun 27, 2021, 10:00 AM PDT
- Expired
- Jun 25, 2021, 1:34 PM PDT
- In force
- Issued by
- NWS Los Angeles, CA
The radar
The Los Angeles radar (KVTX), 6 km from the middle of the area, began a volume at 20:57 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
San Diego, CA (KNKX), launched 12:00Z, 9.0 hours before the alert went out and 251 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
- 992 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 30 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 Los Angeles, CA wrote its last area forecast discussion before this excessive heat watch went out at Jun 24, 1:08 PM PDT, 51 minutes earlier.
Area forecast discussion, Jun 24, 1:08 PM PDT, 51 minutes before
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</html>The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 8:46 PM PDT | Small Craft Advisory | LOX | 4 days |
Nearby
Excessive Heat Watches in California, 2021Every excessive heat watch 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.