We have evidence ot 10 plagues of Egypt. Tempest Stele of Ahmose I,Hatshepsut's Speos Artemidos, an ancient water-trough found in El Arish bears hieroglyphic markings detailing a period of darkness,Egyptian Ipuwer papyrus .
I have to echo cormac's cautionary note about Wiki. As convenient and tempting as it may be, it cannot be regarded as a primary research source. Very little on the internet can be. Of value are translations, for example, of the sorts of inscriptions and monuments you listed—in so far as the translations were performed by legitimate Egyptologists or other historians with the requisite linguistic training. Let's take a closer look, then:
Tempest Stela: Click here for a good translation of this monument. It was conducted by Robert Ritner, a prominent Egyptologist at the Oriental Institute. The stela dates to the dawn of Dynasty 18 (around 1550 BCE) and that alone discounts any possible connection with the Hebrews. Much too early. In any case, the stela provides an account of what appears to be a memorable flood. This is not evidenced in Exodus, so there again a connection is lacking. Moreover, the general thrust of the inscription is to glorify Ahmose I. It's more typical pharaonic bombast than anything else.
Speos Artemidos: Click here for a translation of the relevant part of the inscription. The Reshafim site is one of the few on the internet I myself trust. I've used it in my own translation exercises. But as to the inscription, Hatshepsut took the throne around 1472 BCE, so here again we have a time period too early to have involved the Hebrews. This portion of the inscription was commissioned to glorify Hatshepsut and her efforts to expel the Asiatics (Hyksos) from Egypt—which is amusing on the face of it because the Hyksos had been gone from Egypt for almost eighty years. But this was a common tactic of pharaohs, who were aggressive self-promoters. The occasional pharaoh, even one of historical significance, was known to copy an earlier pharaoh's inscription verbatim simply to glorify himself. But the overriding fact is that the inscription concerns the Hyksos and has no observable connections with Exodus. The mistake might lie in the common misconception that there was some connection between the Hyksos and the Hebrews, but of course there was not. Such a connection is impossible.
El Arish inscription: Click here for a detailed discussion of this artifact, as well as full translations farther down the page. The supposed connections with Exodus originated from the writings of Immanuel Velikovsky, whose work is not taken seriously for a variety of reasons. Velikovsky's interpretation of the inscription has been completely refuted. In truth the El Arish inscription concerns the deities Shu and Geb and was cut in the Ptolemaic Period. No connection with Exodus exists.
Admonitions of Ipuwer: Click here for a decent translation of the text. This comes from the Reshafim site, too. Scholars are divided on the time period to which the original text dates, but most would agree the story in the text concerns either the upheavals of the First Intermediate Period or the hegemony of the Hyksos in the Second Intermediate Period. Either is possible based on the tenor and events described in the text. The First Intermediate Period began around 2200 BCE so, again, this is a time period a very long time before the emergence of the Hebrews. The Hyksos we've already reviewed, and no connection with a Hebrew tradition is tenable.
In writing this outline of inscriptions and texts I am perfectly aware that some scholars of a century ago (or more) themselves saw possible biblical connections (although not with the El Arish inscription, which to my knowledge no historian of any period has seen in this light). Such texts are also popular with fringe proponents and New Agers, so obviously neither of these groups is to be taken seriously. What's important is to consult current research and analyze it in the scope of what we legitimately know about pharaonic history based on extant evidence.
When we do so, we see a repeating pattern that has been stressed right here at UM many times: no evidence for an event like Exodus exists in any form from pharaonic sources.