Alert archive / California / Special Weather Statements in 2017
Special Weather Statement, NWS San Diego, CA
NWS San Diego, CA issued this special weather statement at Aug 3, 2017, 1:21 PM PDT for San Diego County, California. It was in force for 24 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
- Aug 3, 2017, 1:21 PM PDT (20:21 UTC)
- Expired
- Aug 3, 2017, 1:45 PM PDT
- In force
- 24 min
- Issued by
- NWS San Diego, CA
County San Diego County, CA
The radar
The San Diego radar (KNKX), 60 km from the middle of the area, began a volume at 20:24 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
San Diego, CA (KNKX), launched 12:00Z, 8.4 hours before the alert went out and 73 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
- 527 J/kg
- Mixed-layer CIN
- -342 J/kg
- Mixed-layer LCL
- 1297 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
176 WWUS86 KSGX 032021 SPSSGX Special Weather Statement National Weather Service San Diego CA 121 PM PDT THU AUG 3 2017 CAZ058-062-032045- San Diego County Mountains CA-San Diego County Deserts CA- 121 PM PDT THU AUG 3 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SAN DIEGO COUNTY UNTIL 145 PM PDT... At 121 PM PDT, Doppler radar was tracking a strong thunderstorm near Mount Laguna. This storm was nearly stationary. Half inch hail and winds in excess of 40 mph will be possible with this storm, along with very heavy rainfall. Locations impacted include... Southern Mount Laguna, Pine Valley, Manzanita Indian Reservation and La Posta Indian Reservation. LAT...LON 3273 11646 3288 11649 3289 11634 3276 11633 TIME...MOT...LOC 2021Z 257DEG 0KT 3282 11642 $$ Albright
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 12:24 AM PDT | Areal Flood Advisory | SGX | San Bernardino | 111 min |
| Aug 3, 2:52 AM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Aug 3, 3:10 AM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 2 hr |
| Aug 3, 11:13 AM PDT | Special Weather Statement | SGX | San Diego | 47 min |
| Aug 3, 11:46 AM PDT | Special Weather Statement | SGX | Riverside | 29 min |
| Aug 3, 11:59 AM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 3, 12:44 PM PDT | Areal Flood Advisory | SGX | Riverside, San Diego | 2 hr |
| Aug 3, 12:49 PM PDT | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Aug 3, 1:07 PM PDT | Special Weather Statement | SGX | San Diego | 23 min |
| Aug 3, 1:19 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 3, 1:34 PM PDT | Special Weather Statement | SGX | San Diego | 41 min |
| Aug 3, 1:40 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 39 min |
| Aug 3, 2:10 PM PDT | Flash Flood Warning | SGX | San Bernardino | 3 hr |
| Aug 3, 3:12 PM PDT | Special Weather Statement | SGX | 33 min | |
| Aug 3, 3:59 PM PDT | Special Weather Statement | SGX | Orange | 46 min |
| Aug 3, 4:35 PM PDT | Severe Thunderstorm Warning | SGX | Riverside, San Bernardino | 40 min |
Nearby
Special Weather Statements in California, 2017Every special weather statement 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.