Alert archive / California / Special Weather Statements in 2021
Special Weather Statement, NWS San Diego, CA
NWS San Diego, CA issued this special weather statement at Jan 29, 2021, 12:21 PM PST for San Diego County, California. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 29, 2021, 12:21 PM PST (20:21 UTC)
- Expired
- Jan 29, 2021, 1:00 PM PST
- In force
- 39 min
- Issued by
- NWS San Diego, CA
County San Diego County, CA
The radar
The San Diego radar (KNKX), 9 km from the middle of the area, began a volume at 20:23 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, 8.4 hours before the alert went out and 15 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
- 505 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- -237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
375 WWUS86 KSGX 292021 SPSSGX Special Weather Statement National Weather Service San Diego CA 1221 PM PST Fri Jan 29 2021 CAZ043-050-292100- San Diego County Coastal Areas CA-San Diego County Inland Valleys CA- 1221 PM PST Fri Jan 29 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SAN DIEGO COUNTY UNTIL 100 PM PST... At 1221 PM PST, Doppler radar was tracking a strong thunderstorm over Serra Mesa, or over Mission Valley, moving east at 20 mph. Pea size hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... El Cajon, Poway, Tierrasanta, Mission Valley, Santee, Scripps Ranch, Qualcomm, Lake Murray, Kearny Mesa, Lakeside, Serra Mesa, Miramar, Rancho Encantada, Winter Gardens, Allied Gardens, Grantville, Bostonia, San Carlos, Del Cerro and Adams North. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 3277 11714 3284 11715 3297 11697 3284 11684 TIME...MOT...LOC 2021Z 251DEG 18KT 3281 11711 $$ Rodriguez
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 28, 9:32 PM PST | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Jan 28, 10:16 PM PST | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino | 3 hr |
| Jan 29, 12:34 AM PST | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Jan 29, 11:42 AM PST | Beach Hazards Statement | SGX | Orange, San Diego | 5 hr |
| Jan 29, 2:12 PM PST | Special Weather Statement | SGX | San Diego | 33 min |
| Jan 29, 3:35 PM PST | Areal Flood Advisory | SGX | San Diego | 2 hr |
Nearby
Special Weather Statements in California, 2021Every special weather statement 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.