Alert archive / Arizona / Freeze Warnings in 2017
Freeze Warning 2, NWS Phoenix, AZ
NWS Phoenix, AZ issued this freeze warning at Dec 20, 2017, 2:22 PM MST for 4 counties in Arizona. It took effect at Dec 21, 2017, 11:00 PM MST. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2017, 2:22 PM MST (21:22 UTC)
- In effect from
- Dec 21, 2017, 11:00 PM MST
- Expired
- Dec 22, 2017, 9:00 AM MST
- In force
- 10 hr
- Issued by
- NWS Phoenix, AZ
Counties Gila County, AZ, La Paz County, AZ, Maricopa County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 48 km from the middle of the area, began a volume at 21:22 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
Tuscon, AZ (KDMA), launched 12:00Z, 9.4 hours before the alert went out and 184 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
- 1844 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
373 WWUS75 KPSR 202122 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 222 PM MST Wed Dec 20 2017 AZZ552-556>558-560>562-210930- /O.UPG.KPSR.FZ.A.0002.171222T0600Z-171222T1600Z/ /O.NEW.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 222 PM MST Wed Dec 20 2017 ...FREEZE WARNING IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... The National Weather Service in Phoenix has issued a Freeze Warning, which is in effect from 11 PM Thursday to 9 AM MST Friday. The Freeze Watch is no longer in effect. * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-210930- /O.UPG.KPSR.FZ.A.0002.171222T0600Z-171222T1600Z/ /O.NEW.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 222 PM MST Wed Dec 20 2017 ...FREEZE WARNING IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... The National Weather Service in Phoenix has issued a Freeze Warning, which is in effect from 11 PM Thursday to 9 AM MST Friday. The Freeze Watch is no longer in effect. * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-210930- /O.UPG.KPSR.FZ.A.0002.171222T0600Z-171222T1600Z/ /O.NEW.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 222 PM MST Wed Dec 20 2017 ...FREEZE WARNING IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... The National Weather Service in Phoenix has issued a Freeze Warning, which is in effect from 11 PM Thursday to 9 AM MST Friday. The Freeze Watch is no longer in effect. * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ CAZ562-210600- /O.CON.KPSR.WI.Y.0031.171221T0000Z-171221T0600Z/ Imperial County Southwest- Including the city of Mountain Spring 122 PM PST Wed Dec 20 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * AFFECTED AREA...Portions of southeast California, including the Mountain Spring area along Interstate 8. * TIMING...Wednesday afternoon and evening. * WINDS...West 25 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly lowered visibilities to well under a mile at times in blowing dust or blowing sand. Use extra caution. && $$ CAZ560-561-564-568>570-210930- /O.CON.KPSR.WI.Y.0031.171221T0300Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 122 PM PST Wed Dec 20 2017 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 3 PM PST THURSDAY... * AFFECTED AREA...Portions of southeast California, including Joshua Tree National Park and the Interstate 10 corridor. * TIMING...Wednesday evening through Thursday afternoon. * WINDS...Northwest 20 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. 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. && $$
8 follow-up statements
825 WWUS75 KPSR 210458 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 958 PM MST Wed Dec 20 2017 AZZ552-556>558-560>562-210900- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 958 PM MST Wed Dec 20 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-210900- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 958 PM MST Wed Dec 20 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-210900- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 958 PM MST Wed Dec 20 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THURSDAY TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ CAZ562-210800- /O.EXT.KPSR.WI.Y.0031.000000T0000Z-171221T0800Z/ Imperial County Southwest- Including the city of Mountain Spring 858 PM PST Wed Dec 20 2017 ...WIND ADVISORY NOW IN EFFECT UNTIL MIDNIGHT PST TONIGHT... * AFFECTED AREA...Portions of southeast California, including the Mountain Spring area along Interstate 8. * TIMING...Wednesday afternoon and evening. * WINDS...West 25 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. 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. && $$ CAZ560-561-564-568>570-210900- /O.CON.KPSR.WI.Y.0031.000000T0000Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 858 PM PST Wed Dec 20 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THURSDAY... * AFFECTED AREA...Portions of southeast California, including Joshua Tree National Park and the Interstate 10 corridor. * TIMING...Wednesday evening through Thursday afternoon. * WINDS...Northwest 20 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly lowered visibilities to well under a mile at times in blowing dust or blowing sand. Use extra caution. && $$
740 WWUS75 KPSR 210752 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1252 AM MST Thu Dec 21 2017 CAZ562-210900- /O.EXP.KPSR.WI.Y.0031.000000T0000Z-171221T0800Z/ Imperial County Southwest- Including the city of Mountain Spring 1152 PM PST Wed Dec 20 2017 ...WIND ADVISORY WILL EXPIRE AT MIDNIGHT PST TONIGHT... A cold front has moved through southeast California, and will bring a gradual decrease in wind speeds overnight. Locally gusty winds will continue across some ridgetops and within area passes, but advisory-level winds are no longer anticipted. $$ AZZ552-556>558-560>562-220000- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 1252 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-220000- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1252 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-220000- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1252 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ CAZ560-561-564-568>570-212300- /O.CON.KPSR.WI.Y.0031.000000T0000Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 1152 PM PST Wed Dec 20 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THURSDAY... * AFFECTED AREA...Portions of southeast California, including Joshua Tree National Park and the Interstate 10 corridor. * TIMING...Wednesday evening through Thursday afternoon. * WINDS...Northwest 20 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. 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. && $$
447 WWUS75 KPSR 211828 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1128 AM MST Thu Dec 21 2017 AZZ552-556>558-560>562-220630- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 1128 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-220630- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1128 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-220630- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1128 AM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ532-536-539-559-CAZ565-567-220000- /O.NEW.KPSR.DU.Y.0027.171221T1828Z-171222T0000Z/ Yuma-Gila River Valley-Gila Bend-Sonoran Desert Natl Monument- Imperial County Southeast-Imperial Valley- Including the cities of Yuma, Fortuna Foothills, Ligurta, Gila Bend, Sentinel, Winterhaven, El Centro, Calexico, Alamorio, and Brawley 1128 AM MST Thu Dec 21 2017 /1028 AM PST Thu Dec 21 2017/ ...BLOWING DUST ADVISORY IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON... The National Weather Service in Phoenix has issued a Blowing Dust Advisory, which is in effect until 5 PM MST /4 PM PST/ this afternoon. * AFFECTED AREA...Interstate 8 Corridor from Maricopa county through portions of Southeast California. * TIMING...Now until late afternoon today. * WINDS...Gusty northwest winds 30 mph. * VISIBILITY...As low as one-half mile in localized dust channels. * IMPACTS...Strong northwest winds will lead to areas of blowing dust or localized dust channels rapidly reducing roadway visibilities along the highway corridor. Travel with caution. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be ready for a sudden drop in visibility. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep your foot off the brake pedal. Remember, pull aside, stay alive. && $$ CAZ560-561-564-568>570-212300- /O.CON.KPSR.WI.Y.0031.000000T0000Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 1028 AM PST Thu Dec 21 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * AFFECTED AREA...Portions of southeast California, including Joshua Tree National Park and the Interstate 10 corridor. * TIMING...Wednesday evening through Thursday afternoon. * WINDS...Northwest 20 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that sustained wind speeds of between 30 and 40 mph are expected, or wind gusts of between 40 and 58 mph. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly lowered visibilities to well under a mile at times in blowing dust or blowing sand. Use extra caution. && $$
222 WWUS75 KPSR 212058 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 158 PM MST Thu Dec 21 2017 AZZ552-556>558-560>562-212300- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 158 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-212300- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 158 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-212300- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 158 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ532-536-539-559-CAZ565-567-212300- /O.CON.KPSR.DU.Y.0027.000000T0000Z-171222T0000Z/ Yuma-Gila River Valley-Gila Bend-Sonoran Desert Natl Monument- Imperial County Southeast-Imperial Valley- Including the cities of Yuma, Fortuna Foothills, Ligurta, Gila Bend, Sentinel, Winterhaven, El Centro, Calexico, Alamorio, and Brawley 158 PM MST Thu Dec 21 2017 /1258 PM PST Thu Dec 21 2017/ ...BLOWING DUST ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON... * AFFECTED AREA...Interstate 8 Corridor from Maricopa county through portions of Southeast California. * TIMING...Now until late afternoon today. * WINDS...Gusty northwest winds 30 mph. * VISIBILITY...As low as one-half mile in localized dust channels. * IMPACTS...Strong northwest winds will lead to areas of blowing dust or localized dust channels rapidly reducing roadway visibilities along the highway corridor. Travel with caution. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be ready for a sudden drop in visibility. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep your foot off the brake pedal. Remember, pull aside, stay alive. && $$ CAZ560-561-564-568>570-212300- /O.CON.KPSR.WI.Y.0031.000000T0000Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 1258 PM PST Thu Dec 21 2017 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * AFFECTED AREA...Portions of southeast California, including Joshua Tree National Park and the Interstate 10 corridor. * TIMING...Wednesday evening through Thursday afternoon. * WINDS...Northwest 20 to 30 mph. Gusts of 40 to 50 mph. * IMPACTS...Strong cross winds will make driving difficult, especially for high profile vehicles on east-west oriented roads. Use extra caution. Localized blowing dust is also possible, reducing visibilities. 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. && $$
581 WWUS75 KPSR 212303 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 403 PM MST Thu Dec 21 2017 CAZ560-561-564-568>570-220015- /O.EXP.KPSR.WI.Y.0031.000000T0000Z-171221T2300Z/ Joshua Tree NP West-Joshua Tree NP East-Chuckwalla Mountains- Chiriaco Summit-Palo Verde Valley-Chuckwalla Valley- Including the cities of Cottonwood Visitor, Lost Horse-Keys Village, Imperial Hot Mineral Springs, Chiriaco Summit, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 303 PM PST Thu Dec 21 2017 ...WIND ADVISORY HAS EXPIRED... Winds have weakened below Advisory levels and thus the Advisory was allowed to expire. However, conditions will still be breezy to windy from the north and motorists should still be prepared to use extra caution due to more difficult handling. $$ AZZ552-556>558-560>562-221115- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 403 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-221115- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 403 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-221115- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 403 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ532-536-539-559-CAZ565-567-220015- /O.CON.KPSR.DU.Y.0027.000000T0000Z-171222T0000Z/ Yuma-Gila River Valley-Gila Bend-Sonoran Desert Natl Monument- Imperial County Southeast-Imperial Valley- Including the cities of Yuma, Fortuna Foothills, Ligurta, Gila Bend, Sentinel, Winterhaven, El Centro, Calexico, Alamorio, and Brawley 403 PM MST Thu Dec 21 2017 /303 PM PST Thu Dec 21 2017/ ...BLOWING DUST ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON... * AFFECTED AREA...Interstate 8 Corridor from Maricopa county through portions of Southeast California. * TIMING...Now until late afternoon today. * WINDS...Gusty northwest winds 30 mph. * VISIBILITY...As low as one-half mile in localized dust channels. * IMPACTS...Strong northwest winds will lead to areas of blowing dust or localized dust channels rapidly reducing roadway visibilities along the highway corridor. Travel with caution. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be ready for a sudden drop in visibility. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep your foot off the brake pedal. Remember, pull aside, stay alive. && $$
790 WWUS75 KPSR 212315 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 415 PM MST Thu Dec 21 2017 ...A FREEZE WARNING REMAINS IN AFFECT BEGINNING TONIGHT THROUGH FRIDAY MORNING... .A BLOWING DUST ADVISORY REMAINS IN AFFECT THROUGH 5PM MST ALONG THE I-8 CORRIDEOR. AZZ552-556>558-560>562-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 415 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 415 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 415 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ532-536-539-559-CAZ565-567-220015- /O.CON.KPSR.DU.Y.0027.000000T0000Z-171222T0000Z/ Yuma-Gila River Valley-Gila Bend-Sonoran Desert Natl Monument- Imperial County Southeast-Imperial Valley- Including the cities of Yuma, Fortuna Foothills, Ligurta, Gila Bend, Sentinel, Winterhaven, El Centro, Calexico, Alamorio, and Brawley 415 PM MST Thu Dec 21 2017 /315 PM PST Thu Dec 21 2017/ ...BLOWING DUST ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM PST/ THIS AFTERNOON... * AFFECTED AREA...Interstate 8 Corridor from Maricopa county through portions of Southeast California. * TIMING...Now until late afternoon today. * WINDS...Gusty northwest winds 30 mph. * VISIBILITY...As low as one-half mile in localized dust channels. * IMPACTS...Strong northwest winds will lead to areas of blowing dust or localized dust channels rapidly reducing roadway visibilities along the highway corridor. Travel with caution. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be ready for a sudden drop in visibility. If you encounter blowing dust or blowing sand on the roadway or see it approaching, pull off the road as far as possible and put your vehicle in park. Turn the lights all the way off and keep your foot off the brake pedal. Remember, pull aside, stay alive. && $$
199 WWUS75 KPSR 212359 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 459 PM MST Thu Dec 21 2017 ...A FREEZE WARNING REMAINS IN AFFECT BEGINNING TONIGHT THROUGH FRIDAY MORNING... .A BLOWING DUST ADVISORY WILL EXPIRE AT 5PM MST ALONG THE I-8 CORRIDOR. AZZ532-536-539-559-CAZ565-567-220100- /O.EXP.KPSR.DU.Y.0027.000000T0000Z-171222T0000Z/ Yuma-Gila River Valley-Gila Bend-Sonoran Desert Natl Monument- Imperial County Southeast-Imperial Valley- Including the cities of Yuma, Fortuna Foothills, Ligurta, Gila Bend, Sentinel, Winterhaven, El Centro, Calexico, Alamorio, and Brawley 459 PM MST Thu Dec 21 2017 /359 PM PST Thu Dec 21 2017/ ...BLOWING DUST ADVISORY WILL EXPIRE AT 5 PM MST /4 PM PST/ THIS AFTERNOON... WINDS CONTINUE TO DECREASE AND THE DUST ADVISORY WILL BE ALLOWED TO EXPIRE. $$ AZZ552-556>558-560>562-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 459 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 459 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-221030- /O.CON.KPSR.FZ.W.0002.171222T0600Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 459 PM MST Thu Dec 21 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM MST FRIDAY... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$
131 WWUS75 KPSR 220714 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1214 AM MST Fri Dec 22 2017 AZZ552-556>558-560>562-221600- /O.CON.KPSR.FZ.W.0002.000000T0000Z-171222T1600Z/ Superior-Tonto Basin-Mazatzal Mountains- Pinal/Superstition Mountains-San Carlos-Dripping Springs- Globe/Miami- Including the cities of Superior, Punkin Center, Sunflower, San Carlos, Peridot, Hayden, Winkelman, Globe, and Miami 1214 AM MST Fri Dec 22 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * AFFECTED AREA...Portions of southern Gila County and extreme northeastern Maricopa County. Affected communities include Globe, Miami, Superior, Sunflower, and Winkelman. * TEMPERATURES...Lows falling into the 20s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ553-221600- /O.CON.KPSR.FZ.W.0002.000000T0000Z-171222T1600Z/ Northwest Pinal County- Including the cities of Casa Grande, Cactus Forest, Florence, and Coolidge 1214 AM MST Fri Dec 22 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * AFFECTED AREA...Northwest Pinal County including the communities of Casa Grande, Coolidge, Florence, and Ak-Chin Village. * TEMPERATURES...Ranging from the middle 20s to the low 30s. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$ AZZ533-221600- /O.CON.KPSR.FZ.W.0002.000000T0000Z-171222T1600Z/ Central La Paz- Including the cities of Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, and Salome 1214 AM MST Fri Dec 22 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM MST THIS MORNING... * AFFECTED AREA...Much of La Paz County, including the communities of Quartzsite, Bouse, and Wenden. Other affected areas include locations along Interstate 10, and Highways 72 and 95. * TEMPERATURES...Mid to upper 20s for the coldest locations. * IMPACTS...Freezing/sub-freezing temperatures may cause damage to sensitive plants and ornamental vegetation. Poorly insulated pipes may burst. The extreme cold is also dangerous for any pets left outdoors overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will destroy or damage crops and other sensitive vegetation. && $$
What forecasters said that day
The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this freeze warning went out at Dec 20, 3:39 AM MST, 10 hours 43 minutes earlier.
Area forecast discussion, Dec 20, 3:39 AM MST, 10 hours 43 minutes before
Area Forecast Discussion
National Weather Service Phoenix AZ
339 AM MST Wed Dec 20 2017
.SYNOPSIS...
Slightly above normal temperatures are forecast today before a
cold front moves through the region late Wednesday and Thursday,
with strong winds developing across southeast California. Much
cooler temperatures are expected area-wide Thursday and Friday. A
warming trend will occur through the weekend as high pressure
rebuilds over the Pacific Coast.
&&
.DISCUSSION...
A upper trough over the Pacific Northwest is becoming better
defined in satellite imagery over the past several hours,
exhibiting evidence of low-topped convection amidst cold
temperatures aloft. This feature will continue to dig
southeastward across the northern Rockies into the Great Basin
today, and will be the primary driver of changing weather
conditions across the Southwest. Cool conditions overnight will
give way to a pleasant day region-wide, with slightly above
normal temperatures expected today.
A cold front is forecast to enter southeast California this
evening, and quickly sweep southeastward. A modest increase in
west-southwesterly winds will occur ahead of the cold front, with
a more significant strengthening of winds forecast to occur in
the wake of the cold front overnight. The strongest winds are
forecast to occur across higher elevation locations and ridgetops
over southeast California, amidst strong northerly flow above the
surface (e.g., 850-mb winds around 40 kt). Winds will gradually
weaken throughout the day Thursday, but will remain locally strong
into the afternoon. As such, a Wind Advisory will be maintained
for much of southeast California. Areas of blowing sand/dust will
also be possible.
Moisture will be limited area-wide with this system, with only a
slight chance of showers possible late tonight across Joshua Tree
National Park. Otherwise, the other big weather impact will be the
much cooler temperatures spreading across the region in the wake
of the cold front. The current forecast continues to support
below-normal temperatures both Thursday and Friday, with some
lower desert locations struggling to get out of the 50s during
peak heating. The coldest temperatures of the season so far are
expected Friday morning, with 20s across the higher terrain and
even some outlying areas, and 30s across the remainder of the
lower deserts. The Freeze Watch has been maintained across parts
of southern Gila, Pinal, and La Paz Counties for Friday morning.
A gradual warming trend will begin Saturday through early next
week as upper ridging expands eastward. Model solutions have
finally converged on a similar solution, so looks like the
previously anticipated stretch of a more prolonged period of cool
temperatures will not materialize. Temperatures should return to
the low 70s by early next week, while rainfall potential remains
low. More significant discrepancies in the pattern evolution
develop by the middle of next week, with the potential for another
storm system affecting the western CONUS. However, overall
confidence in any scenario remains low.
&&
.AVIATION... South-Central Arizona including KPHX, KIWA, and KSDL:
Light easterly flow will continue today and may only briefly become
southwest for a few hours this afternoon. An approaching weather
system will then switch easterly evening winds around to the west
late Wednesday/early Thursday and will persist through the day on
Thursday. The terminals will remain dry.
California/Southwest Arizona including KIPL and KBLH: Very light
winds through Wednesday morning will eventually become southerly,
then westerly into Wednesday evening. Greater aviation concerns
exists Wednesday night as a cold front moves through the terminals
bringing gusty northwest winds. There is the possibility of reduced
visibilities caused by blowing dust and sand Wednesday night through
Thursday but confidence is not high enough to include it in the TAFs
at this point.
Aviation Discussion not updated for amended TAFs.
&&
.FIRE WEATHER...
Friday through Tuesday... Winds across SE California weaken
dramatically on Friday as a dry weather system exits our area. Wind
speeds look to stay relatively light through early Saturday before
another round of breezy north winds take place Saturday night and
into Sunday across SE California and the Lower Colorado River
Valley. Temperatures steadily rise through early next week with
above normal high temperatures returning on Monday. Afternoon
humidity minimums and overnight recoveries will generally be poor as
dry air remains in place.
&&
.SPOTTER INFORMATION STATEMENT...
Spotters should follow standard reporting procedures.
&&
.PSR WATCHES/WARNINGS/ADVISORIES...
AZ...Freeze Watch from Thursday evening through Friday morning for
AZZ533-552-553-556>558-560>562.
CA...Wind Advisory from 7 PM this evening to 3 PM PST Thursday for
CAZ560-561-564-568>570.
Wind Advisory from 4 PM this afternoon to 10 PM PST this evening
for CAZ562.
&&
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DISCUSSION...Rogers
AVIATION...Wilson
FIRE WEATHER...WilsonNearby
Freeze Warnings in Arizona, 2017Every freeze warning 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.