Alert archive / Arizona / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 39, NWS Phoenix, AZ

August 9, 2016Maricopa County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 9, 2016, 8:20 PM MST for Maricopa County, Arizona. It was in force for 25 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 9, 2016, 8:20 PM MST (03:20 UTC)
Expired: Aug 9, 2016, 8:45 PM MST
In force: 25 min
Issued by: NWS Phoenix, AZ
Area: Storm-based polygon

County Maricopa County, AZ

The radar

The Phoenix radar (KIWA), 104 km from the middle of the area, began a volume at 03:21 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
Aug 9, 8:26 PM MST	TSTM WND GST 49	1 Nne Palo Verde Ngs, AZ	STATION MEASURED WINDS OF 49 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 00:00Z, 3.3 hours before the alert went out and 75 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: 122 J/kg
Mixed-layer CIN: -234 J/kg
Mixed-layer LCL: 1906 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

408 
WUUS55 KPSR 100320
SVRPSR
AZC013-100345-
/O.NEW.KPSR.SV.W.0039.160810T0320Z-160810T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
820 PM MST TUE AUG 9 2016

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARICOPA COUNTY IN SOUTH CENTRAL ARIZONA...

* UNTIL 845 PM MST

* AT 819 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED 8 MILES NORTHEAST OF WINTERSBURG...OR 9 MILES EAST OF
  TONOPAH...AND MOVING NORTHEAST AT 20 MPH. PENNY SIZE HAIL MAY ALSO
  ACCOMPANY THE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  BUCKEYE...PALO VERDE NUCLEAR GENERATION STATION...WINTERSBURG AND
  HASSAYAMPA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3326 11276 3335 11299 3366 11284 3356 11252
TIME...MOT...LOC 0319Z 208DEG 19KT 3351 11277 

$$

WATERS

1 follow-up statement

033 
WWUS55 KPSR 100337
SVSPSR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
837 PM MST TUE AUG 9 2016

AZC013-100345-
/O.CON.KPSR.SV.W.0039.000000T0000Z-160810T0345Z/
MARICOPA AZ-
837 PM MST TUE AUG 9 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM MST
FOR MARICOPA COUNTY...

AT 836 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED 10 MILES WEST OF WHITE TANK MOUNTAIN PARK...OR 13 MILES
NORTHEAST OF TONOPAH...MOVING NORTHEAST AT 20 MPH. PENNY SIZE HAIL
MAY ALSO ACCOMPANY THE DAMAGING WINDS. THIS STORM REAMINS AT SEVERE
LEVELS AND ANOTHER STORM IS STARTING TO DEVELOP WITHIN THE WARNED
POLYGON.

LOCATIONS IMPACTED INCLUDE...
BUCKEYE...PALO VERDE NUCLEAR GENERATION STATION...WINTERSBURG AND
HASSAYAMPA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3326 11276 3335 11299 3366 11284 3356 11252
TIME...MOT...LOC 0336Z 208DEG 19KT 3359 11272 

$$

WATERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 7:54 PM MST	Special Weather Statement	PSR	Maricopa	51 min
Aug 9, 8:44 PM MST	Special Weather Statement	PSR	Maricopa	46 min
Aug 9, 9:10 PM MST	Areal Flood Advisory	PSR	Maricopa	2 hr
Aug 10, 7:24 AM MST	Areal Flood Advisory	PSR	Maricopa	2 hr
Aug 10, 7:33 AM MST	Areal Flood Advisory	PSR	Pinal	3 hr
Aug 10, 1:49 PM MST	Areal Flood Advisory	PSR	Maricopa	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2016 Every severe thunderstorm warning in 2016

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.