Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Jan 24, 2021, 1:02 PM MST. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 24, 2021, 1:02 PM MST (20:02 UTC)
- Expired
- Jan 24, 2021, 1:45 PM MST
- In force
- 43 min
- Issued by
- NWS Tucson, AZ
The radar
The Tucson radar (KEMX), 48 km from the middle of the area, began a volume at 20:02 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 (KTUS), launched 12:00Z, 8.0 hours before the alert went out and 16 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
- 29 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 98 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
825
WWUS85 KTWC 242002
SPSTWC
Special Weather Statement
National Weather Service Tucson AZ
102 PM MST Sun Jan 24 2021
AZZ504-506-507-514-242045-
Santa Catalina and Rincon Mountains including Mount
Lemmon/Summerhaven-Upper San Pedro River Valley including Sierra
Vista/Benson-Southeast Pinal County including
Kearny/Mammoth/Oracle-Tucson Metro Area including Tucson/Green
Valley/Marana/Vail-
102 PM MST Sun Jan 24 2021
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PIMA AND SOUTHERN
PINAL COUNTIES UNTIL 145 PM MST...
At 1259 PM MST, Doppler radar was tracking a group of thunderstorms
near Tucson Estates and over downtown Tucson, moving northeast at 45
mph.
Pea to half inch diameter hail is expected and winds in excess of 45
mph will be possible with this storm. Accumulated hail on roads
will lead to slippery conditions and caution is advised.
Locations impacted include...
Tucson, Catalina, Oro Valley, Marana, Oracle, Davis-Monthan Air Force
Base, Casas Adobes, Drexel Heights, Flowing Wells, Tanque Verde,
Saddlebrooke, South Tucson, Tortolita, Mount Lemmon/Summerhaven,
Sabino Canyon Recreation Area, Saguaro National Park East, Catalina
State Park, Catalina Foothills, Tucson International Airport and
Saguaro National Park West.
LAT...LON 3207 11079 3215 11102 3232 11118 3265 11087
3254 11066 3227 11049
TIME...MOT...LOC 1959Z 228DEG 37KT 3234 11097
$$
CernigliaThe 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 Storm Warning | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 61 hr |
| 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, 1:49 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
Special Weather Statements in Arizona, 2021Every special weather statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.