explain xkcd - User contributions [en]

2186: Dark Matter

2019-08-07T13:05:45Z

Talking stick:

{{comic
| number = 2186
| date = August 7, 2019
| title = Dark Matter
| image = dark_matter.png
| titletext = To detect dark matter, we just need to build a bird feeder that spins two squirrels around the rim in opposite directions at relativistic speeds and collides them together.
}}

==Explanation==
{{incomplete|Created by a SPINNING BIRD FEEDER. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

This implies a squirrel weighs 580 g.
==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}
[[Category:Squirrels]]

2185: Cumulonimbus

2019-08-05T18:16:37Z

Talking stick:

{{comic
| number = 2185
| date = August 5, 2019
| title = Cumulonimbus
| image = cumulonimbus.png
| titletext = The rarest of all clouds is the altocumulenticulostratonimbulocirruslenticulomammanoctilucent cloud, caused by an interaction between warm moist air, cool dry air, cold slippery air, cursed air, and a cloud of nanobots.
}}

==Explanation==
{{incomplete|Created by a CUMULONIMBOCUNIMBULONIMBUS CLOUD. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}

2185: Cumulonimbus

2019-08-05T18:15:50Z

Talking stick:

{{comic
| number = 2185
| date = August 5, 2019
| title = Cumulonimbus
| image = cumulonimbus.png
| titletext = The rarest of all clouds is the altocumulenticulostratonimbulocirruslenticulomammanoctilucent cloud, caused by an interaction between warm moist air, cool dry air, cold slippery air, cursed air, and a cloud of nanobots.
}}

==Explanation==
{{incomplete|Created by a CUMULONIMBOCUNIMBULUNIMBUS CLOUD. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}

2181: Inbox

2019-07-26T16:36:42Z

Talking stick:

{{comic
| number = 2181
| date = July 26, 2019
| title = Inbox
| image = inbox.png
| titletext = Rome's declaration of war against Carthage was sent from a no-reply address, so Hannibal had to cross the Alps to deliver his "UNSUBSCRIBE" response in person.
}}

==Explanation==
{{incomplete|Created by an ANCIENT ROMAN. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}

2179: NWS Warnings

2019-07-23T12:11:03Z

Talking stick:

{{comic
| number = 2179
| date = July 23, 2019
| title = NWS Warnings
| image = nws_warnings.png
| titletext = Kind of rude of them to simultaneously issue an EVACUATION - IMMEDIATE alert, a SHELTER IN PLACE alert, and a 911 TELEPHONE OUTAGE alert.
}}

==Explanation==
{{incomplete|Created by a NWS EMPLOYEE IN A BREAK. Do NOT delete this tag too soon.}}

The {{w|National Weather Service}} (NWS) is a United States federal agency that is tasked with issuing national weather forecasts and {{w|Severe weather terminology (United States)|extreme weather alert}}s.

This comic portrays the NWS as a person that needs breaks, which is absurd, as it is an important service and would probably always have staff active, even on holidays. For example, the NWS [https://www.washingtonpost.com/news/capital-weather-gang/wp/2013/10/04/weather-service-office-begs-please-pay-us-in-secret-message/ continued to work during federal government shutdowns], as it was considered an essential service for the protection of life and property. Even if one of the NWS's 122 local weather offices were to be incapacitated, contingency plans are in place to ensure that nearby offices act as emergency cover; as happened in March 2019 with [https://twitter.com/mikeseidel/status/1106705454435057666 flooding in Nebraska forcing the NWS office in Valley to evacuate.]

Regardless, the NWS has decided to take a break, and so has opted to issue every extreme weather alert possible for the entire country to make sure one is not caught by surprise by extreme weather, since the NWS will not be able to issue warnings. As the NWS could not be sure which areas will need to get warned of severe incidents, the NWS has decided to issue warning polygons that cover the entire United States. A layer of humor is that this would necessitate warnings where they would be highly unlikely to occur in real life; examples include issuing Blizzard Warnings for Florida, where any amount of snow is rare, and Tsunami Warnings for areas very far from any ocean coastline.

The title text mentions how some of the warnings that have been issued require action to get to safety that contradicts the other warnings, for example, an evacuation warning and a shelter in place order, since doing one would mean failing the other. This confusing scenario would likely prompt many concerned citizens to call emergency services for clarification, but the phone outage prevents even this. This adds another layer to the absurdity of the occurrence of the NWS taking a break.

This comic was likely inspired by the heat wave that impacted two-thirds of the US for more than a week.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

[Title in frame]

Alert: Everyone Just Keep An Eye Out In General

[A map of the 48 contiguous states of the United States, surrounded by several warning polygons that cover most or all of the area, along with parts of neighboring countries or the sea.]

[The following warning headers are printed in different colors around the map of the United States, some of which are cut off by the frame. Assumptions about text outside of the frame are given in parentheses]

Gale Warning, Tornado Warning, Flash Flood Warning, Air Quality (Alert) 
Frost Advisory, Severe Thunderstorm Warning, Dense Fog Advisory 
(Hurricane Force W)ind Watch, Tropical Storm Warning, Ice Stor(m Warning) 
(Extreme Cold) Warning, Heat A(dvisory) 
(Flood) Advisory, Snow (Squall Warning) 
(Storm Surge) Warning, Brisk W(ind Advisory) 
(Lake Effect Snow) Watch, Coastal Fl(ood Advisory) 
Dense Smo(ke Advisory) 
(Severe Weather Sta)tement, Gale War(ning) 
(Lakeshore Flood) Advisory, Wind Chill Ad(visory) 
(Extreme) Cold Warning, Blizzard Warn(ing) 
Hurricane Warning, Extreme Fire (Danger) 
(Freezing Fog Adv)isory, Tsunami Warning, Avalanche W(arning) 
(Ice S)torm Warning, Frost Advisory, Fire Warning, Volcano Warn(ing) 
Ashfall Advisory, Red Flag Warning, Radiological Hazard Warning 

[Text below frame]

When the National Weather Service needs to take a day off, they just issue warnings for everything so no one is caught by surprise.
{{comic discussion}}

2176: How Hacking Works

2019-07-15T13:36:36Z

Talking stick:

{{comic
| number = 2176
| date = July 15, 2019
| title = How Hacking Works
| image = how_hacking_works.png
| titletext = If only somebody had warned them that the world would roll them like this.
}}

==Explanation==
{{incomplete|Created by SMASH MOUTH. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}