Alert archive / Arizona / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 5, NWS Tucson, AZ

June 30, 2022Pima County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Jun 30, 2022, 9:16 PM MST for Pima County, Arizona. It was in force for 37 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: Jun 30, 2022, 9:16 PM MST (04:16 UTC)
Expired: Jun 30, 2022, 9:53 PM MST
In force: 37 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Pima County, AZ

The radar

The Tucson radar (KEMX), 90 km from the middle of the area, began a volume at 04:16 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Tuscon, AZ (KTUS), launched 00:00Z, 4.3 hours before the alert went out and 78 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 421 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 2705 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

469 
WUUS55 KTWC 010416
SVRTWC
AZC019-010515-
/O.NEW.KTWC.SV.W.0005.220701T0416Z-220701T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tucson AZ
916 PM MST Thu Jun 30 2022

The National Weather Service in Tucson has issued a

* Severe Thunderstorm Warning for...
  South central Pima County in southeastern Arizona...

* Until 1015 PM MST.

* At 914 PM MST, a severe thunderstorm was located 14 miles south of
  Kitt Peak, or 20 miles southeast of Sells, and is nearly
  stationary.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* This severe thunderstorm will remain over and in the vicinity of 
  the Baboquivari Mountains of south central Pima County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Hail and damaging winds and frequent cloud to ground lightning is 
occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3166 11163 3172 11171 3179 11171 3189 11150
      3184 11140 3172 11137
TIME...MOT...LOC 0414Z 242DEG 2KT 3175 11159 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CSC

1 follow-up statement

764 
WWUS55 KTWC 010453
SVSTWC

Severe Weather Statement
National Weather Service Tucson AZ
953 PM MST Thu Jun 30 2022

AZC019-010503-
/O.CAN.KTWC.SV.W.0005.000000T0000Z-220701T0515Z/
Pima-
953 PM MST Thu Jun 30 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PIMA COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 3166 11163 3172 11171 3179 11171 3189 11150
      3184 11140 3172 11137
TIME...MOT...LOC 0450Z 242DEG 2KT 3176 11157 

$$

CSC

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 3:30 PM MST, 5 hours 46 minutes earlier.

Area forecast discussion, Jun 30, 3:30 PM MST, 5 hours 46 minutes before

Area Forecast Discussion
National Weather Service Tucson AZ
330 PM MST Thu Jun 30 2022

.SYNOPSIS...Showers and thunderstorms will be present each
afternoon and evening this week across southeast Arizona with
plenty of moisture in place. High temperatures will remain near
to slightly below normal.

&&

.DISCUSSION...Isolated to scattered showers and thunderstorms
continue across the area with some of the storms becoming strong
this afternoon. Gusty winds and heavy rainfall remain the
greatest threats with localized flash flooding possible.

Storms will continue to drift north and east into the evening,
gradually weakening by midnight. A few isolated showers or
T'storms possible overnight, as is the case, with many days
during the monsoon.

The continued ebb and flow of monsoon moisture across the area
over the next week will lead to daily rounds of scattered
afternoon and evening showers and thunderstorms. As usual the
coverage of storms will vary each day. High temperatures will vary
a degree or two above or below normal, depending on location,
over the next week.

&&

.AVIATION...Valid through 02/00Z. Through 01/04Z, SCT-BKN clouds
at 7k-9k ft AGL and SCT SHRA/TSRA. Diminishing clouds and
shower/storm activity aft 01/04Z. Erratic SFC wind gusts and
outflows in excess of 40 kts possible with TSRA during the
afternoon and evening hours. Otherwise, SFC wind less than 12 kts,
favoring a WLY direction during the afternoon and evening hours
and variable in direction at other times. Aviation discussion not
updated for TAF amendments.

&&

.FIRE WEATHER...Monsoon moisture will remain in place over the next
several days keeping RH values above critical thresholds. Showers
and thunderstorms will be possible each afternoon and evening,
potentially lingering into the late night hours some nights. Any
storms will carry the threats of lightning, strong wind gusts and
localized flooding.

&&

.TWC WATCHES/WARNINGS/ADVISORIES...None.

&&

Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson

In the hours before

Special weather statement, Jun 30, 4:32 PM MST, 4 hours 44 minutes before

Special Weather Statement
National Weather Service Tucson AZ
432 PM MST Thu Jun 30 2022

AZZ504-514-010000-
Santa Catalina and Rincon Mountains including Mount
Lemmon/Summerhaven-Tucson Metro Area including Tucson/Green
Valley/Marana/Vail-
432 PM MST Thu Jun 30 2022

...A strong thunderstorm will impact portions of eastern Pima County
through 500 PM MST...

At 431 PM MST, Doppler radar was tracking a strong thunderstorm near
Davis-Monthan Air Force Base, moving east at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Tucson, Davis-Monthan Air Force Base, Tanque Verde, Vail, Saguaro
National Park East and Rita Ranch.

This includes Interstate 10 between mile markers 264 and 279.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A brief period of heavy rainfall is also occurring with this storm
and may lead to localized standing water on roadways and heavy
runoff.  Do not drive your vehicle through any flooded roadways.

&&

LAT...LON 3204 11091 3220 11093 3225 11079 3224 11057
      3207 11054 3202 11073
TIME...MOT...LOC 2331Z 265DEG 21KT 3212 11083

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

CSC

Special weather statement, Jun 30, 5:34 PM MST, 3 hours 42 minutes before

Special Weather Statement
National Weather Service Tucson AZ
534 PM MST Thu Jun 30 2022

AZZ504-514-010100-
Santa Catalina and Rincon Mountains including Mount
Lemmon/Summerhaven-Tucson Metro Area including Tucson/Green
Valley/Marana/Vail-
534 PM MST Thu Jun 30 2022

...A strong thunderstorm will impact portions of east central Pima
County through 600 PM MST...

At 533 PM MST, Doppler radar was tracking a strong thunderstorm over
Davis-Monthan Air Force Base, moving east at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Tucson, Davis-Monthan Air Force Base, Tanque Verde, Vail, South
Tucson, Tucson International Airport, Summit, Catalina Foothills,
Saguaro National Park East and Rita Ranch.

This includes the following highways...
 Interstate 10 between mile markers 256 and 278.
 Interstate 19 between mile markers 59 and 63.
 Route 86 near mile marker 171.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Very heavy rainfall is also occurring with this storm and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3204 11097 3226 11101 3229 11069 3204 11067
TIME...MOT...LOC 0033Z 263DEG 13KT 3216 11090

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

CSC

Special weather statement, Jun 30, 7:36 PM MST, 1 hour 40 minutes before

Special Weather Statement
National Weather Service Tucson AZ
736 PM MST Thu Jun 30 2022

AZZ502-504-010300-
Tohono O'odham Nation including Sells-Tucson Metro Area including
Tucson/Green Valley/Marana/Vail-
736 PM MST Thu Jun 30 2022

...A strong thunderstorm will impact portions of northeastern Pima
County through 800 PM MST...

At 735 PM MST, Doppler radar was tracking a strong thunderstorm 10
miles west of Saguaro National Park West, or 16 miles southwest of
Marana, moving southeast at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Tucson, Drexel Heights, Three Points, Avra Valley, Saguaro National
Park West, Valencia West, Tucson Estates, Picture Rocks and Ryan
AirField.

This includes Route 86 between mile markers 153 and 166.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Very heavy rainfall is also occurring with this storm and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent lightning is occurring with this storm. Lightning can
strike 10 miles away from a thunderstorm. Seek a safe shelter inside
a building or vehicle.

&&

LAT...LON 3222 11151 3238 11137 3226 11102 3202 11116
TIME...MOT...LOC 0235Z 295DEG 16KT 3225 11135

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

CSC

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 5:34 PM MST	Special Weather Statement	TWC		26 min
Jun 30, 6:55 PM MST	Areal Flood Advisory	TWC	Santa Cruz	3 hr
Jun 30, 7:36 PM MST	Special Weather Statement	TWC	Pima	24 min
Jun 30, 8:03 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jun 30, 8:28 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jun 30, 8:36 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jun 30, 8:43 PM MST	Severe Thunderstorm Warning	TWC	Pima	32 min
Jul 1, 11:05 AM MST	Areal Flood Advisory	TWC	Graham	3 hr
Jul 1, 12:37 PM MST	Special Weather Statement	TWC		38 min
Jul 1, 12:51 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 1, 1:11 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pinal	2 hr
Jul 1, 1:19 PM MST	Special Weather Statement	TWC		41 min
Jul 1, 1:28 PM MST	Areal Flood Advisory	TWC	Cochise	3 hr
Jul 1, 1:51 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 1, 2:00 PM MST	Special Weather Statement	TWC	Santa Cruz	45 min
Jul 1, 2:22 PM MST	Special Weather Statement	TWC		38 min
Jul 1, 2:36 PM MST	Special Weather Statement	TWC		24 min
Jul 1, 2:53 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	3 hr
Jul 1, 3:09 PM MST	Severe Thunderstorm Warning	TWC	Pima	51 min
Jul 1, 3:16 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 1, 3:18 PM MST	Areal Flood Advisory	TWC	Pima	3 hr
Jul 1, 3:27 PM MST	Special Weather Statement	TWC		48 min
Jul 1, 3:37 PM MST	Severe Thunderstorm Warning	TWC	Pima	38 min
Jul 1, 3:41 PM MST	Flash Flood Warning Considerable damage threat	TWC	Pima	3 hr
Jul 1, 3:55 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	2 hr
Jul 1, 4:40 PM MST	Areal Flood Advisory	TWC	Pima	2 hr
Jul 1, 4:45 PM MST	Special Weather Statement	TWC	Santa Cruz	45 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2022 Every severe thunderstorm warning in 2022

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.