Alert archive / California / Wind Advisories in 2021
Wind Advisory 27, NWS Phoenix, AZ
NWS Phoenix, AZ issued this wind advisory at Dec 25, 2021, 12:48 PM PST for Imperial County, California. It took effect at Dec 25, 2021, 7:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 25, 2021, 12:48 PM PST (20:48 UTC)
- In effect from
- Dec 25, 2021, 7:00 PM PST
- Expired
- Dec 26, 2021, 7:15 AM PST
- In force
- 12 hr
- Issued by
- NWS Phoenix, AZ
County Imperial County, CA
The radar
The Yuma radar (KYUX), 90 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 173 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
- 24 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
319 WWUS75 KPSR 252048 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 148 PM MST Sat Dec 25 2021 CAZ562-260900- /O.NEW.KPSR.WI.Y.0027.211226T0300Z-211226T1700Z/ Imperial County Southwest- 1248 PM PST Sat Dec 25 2021 ...WIND ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 9 AM PST SUNDAY... * WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Southwest corner of Imperial County. * WHEN...From 7 PM this evening to 9 AM PST Sunday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. This affects Interstate 8 near the San Diego County border. Patchy blowing dust is possible as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly lowered visibilities to well under a mile at times in blowing dust or blowing sand. Use extra caution. && $$ AJ
2 follow-up statements
086 WWUS75 KPSR 260844 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 144 AM MST Sun Dec 26 2021 CAZ562-261700- /O.CON.KPSR.WI.Y.0027.000000T0000Z-211226T1700Z/ Imperial County Southwest- 1244 AM PST Sun Dec 26 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Southwest corner of Imperial County. * WHEN...Through 9 AM PST Sunday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. This affects Interstate 8 near the San Diego County border. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly lowered visibilities to well under a mile at times in blowing dust or blowing sand. Use extra caution. && $$
829 WWUS75 KPSR 261515 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 815 AM MST Sun Dec 26 2021 CAZ562-261615- /O.CAN.KPSR.WI.Y.0027.000000T0000Z-211226T1700Z/ Imperial County Southwest- 715 AM PST Sun Dec 26 2021 ...WIND ADVISORY IS CANCELLED... Winds in the Advisory area are no longer expected to meet criteria. While speeds may pick up later this morning but they are not expected to reach Advisory levels. $$ AJ
Nearby
Wind Advisories in California, 2021Every wind 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.