B737 first officer experienced a loss of cabin pressurization at FL360 while deviating around weathe...

Narrative:

We were on a large weather deviation to avoid a large line of weather. Passengers; and cabin crew; were all directed to be seated earlier; due to turbulence associated with the weather. At FL360 cruise; we received a cabin altitude warning horn and immediately donned masks and established communications. Captain was pilot flying (PF). I immediately; as pilot monitoring (pm); notified ATC and informed them we were going to descend immediately; and also requested a turn further to the west to avoid turbulence; as we descended; so that we could increase our airspeed for the descent. We followed the QRH; and determined we could not control the cabin altitude. I believe the cabin was around 15;000' to 16;000'; and it was climbing fairly rapidly as we began descent. However; it did not appear to be an explosive depress situation. Masks were deployed in the cabin; per the checklist/automatically; and I asked ATC what the closest airport was. We decided to divert to the closest field so as not to create a fuel situation by continuing to destination. After coordinating with flight attendants (flight attendant); passengers; ATC; and dispatch via ACARS; we completed checklists and landed uneventfully. We requested EMS to be standing by at gate in case any passengers needed medical attention.

Original NASA ASRS Text

Title: B737 First Officer experienced a loss of cabin pressurization at FL360 while deviating around weather. ATC is advised and the flight descends to 10;000 feet diverts to the nearest suitable airport.

Narrative: We were on a large weather deviation to avoid a large line of weather. Passengers; and Cabin Crew; were all directed to be seated earlier; due to turbulence associated with the weather. At FL360 cruise; we received a Cabin Altitude Warning horn and immediately donned masks and established communications. Captain was Pilot Flying (PF). I immediately; as Pilot Monitoring (PM); notified ATC and informed them we were going to descend immediately; and also requested a turn further to the west to avoid turbulence; as we descended; so that we could increase our airspeed for the descent. We followed the QRH; and determined we could not control the cabin altitude. I believe the cabin was around 15;000' to 16;000'; and it was climbing fairly rapidly as we began descent. However; it did not appear to be an explosive depress situation. Masks were deployed in the cabin; per the Checklist/automatically; and I asked ATC what the closest airport was. We decided to divert to the closest field so as not to create a fuel situation by continuing to destination. After coordinating with Flight Attendants (FA); Passengers; ATC; and Dispatch via ACARS; we completed Checklists and landed uneventfully. We requested EMS to be standing by at gate in case any passengers needed medical attention.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1346904
Time
Date	201604
Local Time Of Day	1801-2400
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 138 Flight Crew Type 7000
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Altitude Excursion From Assigned Altitude Inflight Event / Encounter Weather / Turbulence

B737 first officer experienced a loss of cabin pressurization at FL360 while deviating around weather. ATC is advised and the flight descends to 10;000 feet diverts to the nearest suitable airport.