Alert archive / Arizona / Winter Storm Warnings in 2021
Winter Storm Warning 1, NWS Tucson, AZ
NWS Tucson, AZ issued this winter storm warning at Jan 24, 2021, 3:38 AM MST for 6 counties in Arizona. It took effect at Jan 25, 2021, 1:00 PM MST. It was in force for 28 hr. 32 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 24, 2021, 3:38 AM MST (10:38 UTC)
- In effect from
- Jan 25, 2021, 1:00 PM MST
- Expired
- Jan 26, 2021, 5:00 PM MST
- In force
- 28 hr
- Issued by
- NWS Tucson, AZ
Counties Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 61 km from the middle of the area, began a volume at 10:43 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 25, 3:38 PM MST | HEAVY SNOW 14 | 18 Ne Tucson, AZ | 14 INCHES OF SNOW ON THE GROUND IN SUMMERHAVEN, 4-6 INCHES NEW SINCE THIS MORNING. |
| Jan 25, 6:00 PM MST | HEAVY SNOW 18 | 16 Nne Rio Rico, AZ | AT MT HOPKINS OBSERVATORY. |
| Jan 26, 8:00 AM MST | HEAVY SNOW 2 | 24 Se Tucson, AZ | 0.5 TO 2 INCHES IN THE AREA. |
| Jan 26, 8:00 AM MST | HEAVY SNOW 3 | Sierra Vista, AZ | SNOW VARIED FROM 1 TO 3 INCHES AROUND THE AREA. |
| Jan 26, 8:00 AM MST | HEAVY SNOW 8 | Bisbee, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 1 | 7 W Tucson, AZ | |
| Jan 26, 8:30 AM MST | SNOW 1 | Benson, AZ | |
| Jan 26, 8:30 AM MST | SNOW 1 | Tombstone, AZ | |
| Jan 26, 8:30 AM MST | SNOW 1 | Willcox, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 2 | Thatcher, AZ | VARIED FROM 1 TO 2 INCHES IN THE AREA. |
| Jan 26, 8:30 AM MST | HEAVY SNOW 3 | 10 S Safford, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 3 | Douglas, AZ | VARIED FROM 2 TO 3 INCHES IN THE AREA. |
| Jan 26, 8:30 AM MST | HEAVY SNOW 3 | Duncan, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 3 | Morenci, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 3 | Oracle, AZ | |
| Jan 26, 8:30 AM MST | HEAVY SNOW 13 | 20 Nne Tucson, AZ | SUMMERHAVEN WITH 13 INCHES NEW AND 25 INCHES ON GROUND. |
| Jan 26, 8:30 AM MST | HEAVY SNOW 20 | 13 Sw Safford, AZ | ATOP MT GRAHAM, 16 TO 20 INCHES STORM TOTAL. |
| Jan 26, 9:00 AM MST | HEAVY SNOW 4 | 11 Ne Patagonia, AZ | 3.5 INCHES IN SONOITA. |
| Jan 26, 9:00 AM MST | HEAVY SNOW 6 | 21 Nne Patagonia, AZ | 4 TO 6 INCHES REPORTED HIGHWAY 83 BETWEEN SONOITA AND I-10 BY ADOT. |
| Jan 26, 11:00 AM MST | SNOW 1 | Tucson, AZ | RECORDED AT THE TUCSON AIRPORT. |
| Jan 26, 11:00 AM MST | HEAVY SNOW 5 | 13 Se Sierra Vista, AZ | 4.5 INCHES IN HEREFORD |
| Jan 26, 11:17 AM MST | HEAVY SNOW 2 | 11 Ssw Green Valley, AZ | 1 TO 2 INCHES IN AMADO AREA. |
| Jan 26, 12:46 PM MST | SNOW 1 | 15 Ese Tucson, AZ | |
| Jan 26, 1:15 PM MST | HEAVY SNOW 11 | Bisbee, AZ | 10.5 INCHES STORM TOTAL. |
| Jan 26, 1:19 PM MST | HEAVY SNOW 3 | Rio Rico, AZ | |
| Jan 26, 1:30 PM MST | SNOW 8 | 5 Ne Superior, AZ | DELAYED REPORT. STORM-TOTAL SNOWFALL ESTIMATED 8-10 INCHES. TOP-OF-THE-WORLD AREA. |
| Jan 26, 1:48 PM MST | HEAVY SNOW 7 | 42 Nne Douglas, AZ | 6.5 INCHES AT PARADISE RESEARCH STATION, STILL SNOWING. |
| Jan 26, 1:50 PM MST | HEAVY SNOW 2 | Benson, AZ | |
| Jan 26, 1:51 PM MST | HEAVY SNOW 3 | Vail, AZ | |
| Jan 26, 2:00 PM MST | HEAVY SNOW 4 | Nogales, AZ | SNOW VARIED FROM LESS THAN AN INCH TO 4 INCHES DEPENDING ON ELEVATION. |
| Jan 26, 2:39 PM MST | HEAVY SNOW 3 | 7 Ese Patagonia, AZ | PATAGONIA LAKE |
| Jan 26, 3:11 PM MST | HEAVY SNOW 4 | 13 Se Tucson, AZ | 3.5 INCHES 3 MLES EAST OF RITA RANCH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 10.6 hours before the alert went out and 49 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
- 4 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 2188 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
274 WWUS45 KTWC 241038 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 338 AM MST Sun Jan 24 2021 AZZ510>514-242030- /O.UPG.KTWC.WS.A.0001.210126T0000Z-210127T0000Z/ /O.NEW.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ /O.CON.KTWC.WW.Y.0001.000000T0000Z-210125T0300Z/ White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Hannagan Meadow, Mount Graham, Chiricahua NM, Mount Lemmon, and Summerhaven 338 AM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...WINTER STORM WARNING IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 8 to 14 inches. Winds gusting as high as 40 mph. For the Winter Weather Advisory, snow accumulations of 3 to 8 inches. Winds gusting as high as 35 mph. * WHERE...White Mountains of Graham and Greenlee Counties, Galiuro and Pinaleno Mountains, Chiricahua Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains and Catalina and Rincon Mountains. * WHEN...For the Winter Storm Warning, from 1 PM Monday to 5 PM MST Tuesday. For the Winter Weather Advisory, until 8 PM MST this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ503-504-506>509-515-242030- /O.UPG.KTWC.WS.A.0001.210126T0000Z-210127T0000Z/ /O.NEW.KTWC.WW.Y.0002.210125T2000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley-Tucson Metro Area- Southeast Pinal County-Upper San Pedro River Valley- Eastern Cochise County below 5000 feet-Upper Gila River Valley- Baboquivari Mountains- Including the cities of Nogales, Vail, Oracle, Sierra Vista, Benson, Willcox, and Clifton 338 AM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations 1 to 3 inches. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
7 follow-up statements
531 WWUS45 KTWC 242228 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 328 PM MST Sun Jan 24 2021 AZZ503-507-508-251230- /O.UPG.KTWC.WW.Y.0002.210125T2000Z-210127T0000Z/ /O.EXA.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- Including the cities of Nogales, Sierra Vista, and Benson 328 PM MST Sun Jan 24 2021 ...WINTER STORM WARNING IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY FOR ELEVATIONS ABOVE 3500 FEET... * WHAT...Heavy snow expected. Total snow accumulations of 3 to 8 inches. Up to 12 inches for elevations around 5000 feet and above. Winds gusting as high as 45 mph with blowing and drifting snow possible. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ510>514-251230- /O.CON.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ /O.CON.KTWC.WW.Y.0001.000000T0000Z-210125T0300Z/ White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, Canelo Hills, Mount Lemmon, and Summerhaven 328 PM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 8 to 16 inches. Winds gusting as high as 45 mph. For the Winter Weather Advisory, additional snow accumulations of 1 to 4 inches through this evening. Winds gusting up to 35 mph. * WHERE...White Mountains of Graham and Greenlee Counties, Galiuro and Pinaleno Mountains, Chiricahua Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains and Catalina and Rincon Mountains. * WHEN...For the Winter Storm Warning, from 1 PM Monday to 5 PM MST Tuesday. For the Winter Weather Advisory, until 8 PM MST this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ504-251230- /O.EXT.KTWC.WW.Y.0002.210126T0300Z-210127T0000Z/ Tucson Metro Area- Including the cities of Green Valley and Vail 328 PM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 PM MONDAY TO 5 PM MST TUESDAY FOR ELEVATIONS AROUND AND ABOVE 2700 FEET, WHICH INCLUDES THE LOWER FOOTHILLS OF THE CATALINA, RINCON AND TUCSON MOUNTAINS... * WHAT...Snow expected. Total snow accumulations 1 to 3 inches. A dusting of snow is possible down to 2500 feet, which includes the city of Tucson. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 8 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ506-509-515-251230- /O.CON.KTWC.WW.Y.0002.210125T2000Z-210127T0000Z/ Southeast Pinal County-Upper Gila River Valley- Baboquivari Mountains- Including the cities of Mammoth, Oracle, Clifton, and Safford 328 PM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations 1 to 3 inches between 2500-5000 feet, with 3-6 inches above 5000 feet. Less than one inch for elevations below 2500 feet. Expect higher amounts in the mountains. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
884 WWUS45 KTWC 250300 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 800 PM MST Sun Jan 24 2021 AZZ510>514-251400- /O.EXP.KTWC.WW.Y.0001.000000T0000Z-210125T0300Z/ /O.CON.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, Canelo Hills, Mount Lemmon, and Summerhaven 800 PM MST Sun Jan 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 14 inches. Winds gusting as high as 45 mph. * WHERE...White Mountains of Graham and Greenlee Counties, Galiuro and Pinaleno Mountains, Chiricahua Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains and Catalina and Rincon Mountains. * WHEN...For the Winter Storm Warning, from 1 PM Monday to 5 PM MST Tuesday. For the Winter Weather Advisory, until 8 PM MST this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ503-507-508-251400- /O.CON.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- Including the cities of Nogales, Sierra Vista, and Benson 800 PM MST Sun Jan 24 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY FOR ELEVATIONS ABOVE 3500 FEET... * WHAT...Heavy snow expected with total snow accumulations of 3 to 8 inches between 3500-5000 feet. Up to 12 inches is possible for elevations around 5000 feet. Winds gusting as high as 45 mph, with blowing and drifting snow possible. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ504-251400- /O.CON.KTWC.WW.Y.0002.210126T0300Z-210127T0000Z/ Tucson Metro Area- Including the cities of Green Valley and Vail 800 PM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM MONDAY TO 5 PM MST TUESDAY FOR ELEVATIONS ABOVE 2700 FEET, WHICH INCLUDES THE LOWER FOOTHILLS OF THE CATALINA, RINCON AND TUCSON MOUNTAINS... * WHAT...Snow expected with total snow accumulations 1 to 3 inches. A dusting of snow is possible down to 2500 feet, which includes the city of Tucson. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 8 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ506-509-515-251400- /O.CON.KTWC.WW.Y.0002.210125T2000Z-210127T0000Z/ Southeast Pinal County-Upper Gila River Valley- Baboquivari Mountains- Including the cities of Mammoth, Oracle, Clifton, and Safford 800 PM MST Sun Jan 24 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM MONDAY TO 5 PM MST TUESDAY... * WHAT...Snow expected with total snow accumulations of 1 to 3 inches between 2500-5000 feet, with 3-6 inches above 5000 feet. Less than one inch is possible for elevations below 2500 feet. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
782 WWUS45 KTWC 250921 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 221 AM MST Mon Jan 25 2021 AZZ503-507-508-510>514-252000- /O.CON.KTWC.WS.W.0001.210125T2000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Nogales, Sierra Vista, Benson, Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, Canelo Hills, Mount Lemmon, and Summerhaven 221 AM MST Mon Jan 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST TUESDAY... * WHAT...Heavy snow expected with total snow accumulations of 3 to 8 inches between 3500-5000 feet. Up to 12 inches is possible for elevations above 5000 feet. Winds gusting as high as 45 mph, with blowing and drifting snow possible. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ504-252000- /O.CON.KTWC.WW.Y.0002.210126T0300Z-210127T0000Z/ Tucson Metro Area- Including the cities of Green Valley and Vail 221 AM MST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 5 PM MST TUESDAY... * WHAT...Snow expected with total snow accumulations 1 to 3 inches. A dusting of snow is possible down to 2500 feet, which includes the city of Tucson. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 8 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ506-509-515-252000- /O.CON.KTWC.WW.Y.0002.210125T2000Z-210127T0000Z/ Southeast Pinal County-Upper Gila River Valley- Baboquivari Mountains- Including the cities of Mammoth, Oracle, Clifton, and Safford 221 AM MST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 5 PM MST TUESDAY... * WHAT...Snow expected with total snow accumulations of 1 to 3 inches between 2500-5000 feet, with 3-6 inches above 5000 feet. Less than one inch is possible for elevations below 2500 feet. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
651 WWUS45 KTWC 252116 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 216 PM MST Mon Jan 25 2021 AZZ503-507-508-510>514-261300- /O.CON.KTWC.WS.W.0001.000000T0000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Nogales, Sierra Vista, Benson, Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, Canelo Hills, Mount Lemmon, and Summerhaven 216 PM MST Mon Jan 25 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST TUESDAY... * WHAT...Heavy snow expected with total snow accumulations of 3 to 7 inches between 3000-5000 feet and 7 to 12 inches for elevations between 5000-7000 feet. Above 7000 feet, expect 12 to 18 inches with locally higher amounts nearing two feet for mountain peaks. Winds gusting as high as 45 mph, with blowing and drifting snow likely. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions with potential for snow-packed roadways. Travel could be impossible at times. Brief blizzard like conditions will be possible in gusty winds, especially for the mountains. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are expected. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ504-261300- /O.CON.KTWC.WW.Y.0002.210126T0300Z-210127T0000Z/ Tucson Metro Area- Including the cities of Tucson, Green Valley, and Vail 216 PM MST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 5 PM MST TUESDAY FOR ELEVATIONS AROUND AND ABOVE 2500 FEET... * WHAT...Snow expected with total snow accumulations 1 to 3 inches. A dusting to one inch of snow is possible down to 2500 feet, which includes the city of Tucson. Best chance for snow will be the foothills around Tucson. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 8 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ509-515-261300- /O.CON.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Upper Gila River Valley-Baboquivari Mountains- Including the cities of Clifton and Safford 216 PM MST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST TUESDAY FOR ELEVATIONS AROUND AND ABOVE 2500 FEET... * WHAT...Snow expected with total snow accumulations of 1 to 3 inches between 2500-5000 feet, with 3-6 inches above 5000 feet. Less than one inch is possible for elevations below 2500 feet. Winds gusting as high as 35 mph. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ506-261300- /O.CON.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Southeast Pinal County- Including the cities of Mammoth and Oracle 216 PM MST Mon Jan 25 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST TUESDAY FOR ELEVATIONS AROUND AND ABOVE 2500 FEET... * WHAT...Snow expected with total snow accumulations of 1 to 3 inches between 2500-4000 feet, with 3-6 inches above 5000 feet. A dusting to one inch is possible for elevations below 2500 feet. Winds gusting as high as 35 mph with possible blowing and drifting of snow. * WHERE...Portions of Southeast Arizona. * WHEN...From 1 PM Monday to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
772 WWUS45 KTWC 260925 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 225 AM MST Tue Jan 26 2021 AZZ503-507-508-510>514-262100- /O.CON.KTWC.WS.W.0001.000000T0000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Catalina and Rincon Mountains- Including the cities of Nogales, Sierra Vista, Benson, Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, Canelo Hills, Mount Lemmon, and Summerhaven 225 AM MST Tue Jan 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow, heavy at times, can be expected today. Storm total snow accumulations of 3 to 7 inches, with up to 18 inches above 7,000 feet will be possible. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...Until 5 PM MST today. * IMPACTS...Plan on slippery road conditions with potential for snow-packed roadways. Travel could be impossible at times. Brief blizzard like conditions will be possible in gusty winds, especially for the mountains. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ504-506-262100- /O.CON.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Tucson Metro Area-Southeast Pinal County- Including the cities of Tucson, Green Valley, Vail, Mammoth, and Oracle 225 AM MST Tue Jan 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected with total snow accumulations 1 to 3 inches. A dusting to one inch of snow is possible down to 2500 feet, which includes the city of Tucson. Best chance for snow will be the foothills around Tucson. * WHERE...Portions of Southeast Arizona. * WHEN...Until 5 PM MST today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ509-515-262100- /O.CON.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Upper Gila River Valley-Baboquivari Mountains- Including the cities of Clifton and Safford 225 AM MST Tue Jan 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow showers expected with 1 to 3 inches in the lower valleys. Elevations above 5,000 feet could see 3 to 6 inches. * WHERE...Portions of Southeast Arizona. * WHEN...Until 5 PM MST today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
492 WWUS45 KTWC 262059 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 159 PM MST Tue Jan 26 2021 AZZ514-262200- /O.CAN.KTWC.WS.W.0001.000000T0000Z-210127T0000Z/ Catalina and Rincon Mountains- 159 PM MST Tue Jan 26 2021 ...WINTER STORM WARNING IS CANCELLED... Heavy snow has ended, although some light snow showers will continue through the remainder of the afternoon hours. $$ AZZ504-506-515-262200- /O.CAN.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Tucson Metro Area-Southeast Pinal County-Baboquivari Mountains- 159 PM MST Tue Jan 26 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... A few light rain or mixed rain and snow showers will continue through the remainder of this afternoon before ending. No additional accumulation is expected. $$ AZZ503-507-508-510>513-270000- /O.CON.KTWC.WS.W.0001.000000T0000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including the cities of Nogales, Sierra Vista, Benson, Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, and Canelo Hills 159 PM MST Tue Jan 26 2021 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow, heavy at times, can be expected for the remainder of this afternoon before tapering off. Storm total snow accumulations of 3 to 7 inches, with up to 18 inches above 7,000 feet will be possible. * WHERE...Upper Santa Cruz River Valley/Altar Valley, Upper San Pedro River Valley and Eastern Cochise County below 5000 feet. * WHEN...Until 5 PM MST today. * IMPACTS...Plan on slippery road conditions with potential for snow-packed roadways. Travel could be impossible at times. Brief blizzard like conditions will be possible in gusty winds, especially for the mountains. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Warning means heavy snow accumulations are expected. Gusty winds and blowing snow are also possible. This will make travel very difficult or impossible...especially in the mountains. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ AZZ509-270000- /O.CON.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Upper Gila River Valley- Including the cities of Clifton and Safford 159 PM MST Tue Jan 26 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow showers expected with 1 to 3 inches in the lower valleys. Elevations above 5,000 feet could see 3 to 6 inches. * WHERE...Portions of Graham and Greenlee counties. * WHEN...Until 5 PM MST today. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Stay tuned to NOAA Weather Radio...commercial television or radio stations...or your cable television service provider for updates on this Winter Storm. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
282 WWUS45 KTWC 270004 WSWTWC URGENT - WINTER WEATHER MESSAGE National Weather Service Tucson AZ 504 PM MST Tue Jan 26 2021 AZZ503-507-508-510>513-270115- /O.EXP.KTWC.WS.W.0001.000000T0000Z-210127T0000Z/ Upper Santa Cruz River Valley/Altar Valley- Upper San Pedro River Valley- Eastern Cochise County below 5000 feet- White Mountains of Graham and Greenlee Counties- Galiuro and Pinaleno Mountains-Chiricahua Mountains- Dragoon and Mule and Huachuca and Santa Rita Mountains- Including the cities of Nogales, Sierra Vista, Benson, Hannagan Meadow, Mount Graham, Chiricahua NM, Bisbee, and Canelo Hills 504 PM MST Tue Jan 26 2021 ...WINTER STORM WARNING HAS EXPIRED... Most snow showers have moved east of the area. Little or no additional snowfall expected. $$ AZZ509-270115- /O.EXP.KTWC.WW.Y.0002.000000T0000Z-210127T0000Z/ Upper Gila River Valley- Including the cities of Clifton and Safford 504 PM MST Tue Jan 26 2021 ...WINTER WEATHER ADVISORY HAS EXPIRED... Most snow showers have moved east of the area. Little or no additional snowfall expected. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 24, 3:38 AM MST | Winter Weather Advisory | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 61 hr |
| Jan 24, 11:13 AM MST | Special Weather Statement | TWC | Pinal | 32 min |
| Jan 24, 11:26 AM MST | Special Weather Statement | TWC | 34 min | |
| Jan 24, 1:02 PM MST | Special Weather Statement | TWC | 43 min | |
| Jan 24, 1:49 PM MST | Special Weather Statement | TWC | Pinal | 56 min |
| Jan 24, 2:46 PM MST | Special Weather Statement | TWC | Pinal | 44 min |
| Jan 24, 2:53 PM MST | Special Weather Statement | TWC | 37 min | |
| Jan 24, 3:26 PM MST | Special Weather Statement | TWC | Pinal | 49 min |
Nearby
Winter Storm Warnings in Arizona, 2021Every winter storm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.