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You are looking at Spring 2026. That term is over, so these are last term's numbers rather than seats you can take. dibs holds 21 sections for Spring 2026, read about 2 months ago. Separately, it has finished 15 of the 5,462 courses on its current checking list for this term. Future-term coverage is incomplete, so a course with nothing here may simply not have been reached yet. Back to Winter 2027

A&O SCI 3

Meteorology and Extreme Weather

Lecture and discussion.

Spring 2026: 1 lecture and 3 discussions. All of them are open. The oldest of these readings was about 2 months ago.

See sections

Grades

3.42

Average grade awarded in A&O SCI 3. Not a student rating: this is what the grades were.

In the A range

63%

of the 669 letter grades

D, F or W

4.5%

of every letter grade awarded, plus withdrawals

Taken pass/no pass

15%

90% of those passed

The registrar's own records: 669 grades over 12 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.

What is inside that record

No summer session is in that record.

The table below splits them, and term averages across those 12 terms ran 2.92 to 3.70.

Historical grades for MITCHELL, JONATHAN LLOYD, across recorded terms. The course summary above includes all professors.

  • A+ 34 · 18.6%
  • A 84 · 45.9%
  • A- 17 · 9.3%
  • B+ 12 · 6.6%
  • B 13 · 7.1%
  • B- 4 · 2.2%
  • C+ 4 · 2.2%
  • C 7 · 3.8%
  • C- 2 · 1.1%
  • D+ 2 · 1.1%
  • D 1 · 0.5%
  • D- 3 · 1.6%
  • P 41 of 229
  • NP 3 of 229
  • I 2 of 229

Percentages are of the 183 letter grades. Grey bars are non-letter outcomes: passes (P), no-passes (NP), and incompletes (I).

How the non-letter outcomes are counted

They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Predicted GPA, raw average, sample size, terms, A range and the workload reviewers reported for every instructor with a grade record in this course
Instructor Predicted GPA Raw n Terms A range Workload Spring 2026
CHAMECKI, MARCELO reviews ↗ 3.45 3.45 250 3 68% very light not teaching it
MITCHELL, JONATHAN LLOYD reviews ↗ 3.57 3.59 183 3 74% very light Open, 16 seats left
CHEN, GANG reviews ↗ 3.48 3.49 130 4 67% very light not teaching it
BAIJNATH-RODINO, JANINE ANN reviews ↗ 3.00 2.94 106 2 27% - not teaching it
Why Predicted is not the Raw average

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.

Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.

Reviews for A&O SCI 3

Workload and assignments

Reported assignments across instructors and terms. This term's syllabus may differ.

What the work looks like

  • 2 exams, 7 mentions in past reviews
  • Quizzes mentioned, no number given, 2 mentions in past reviews
  • Problem sets mentioned, no number given, 1 mention in past reviews
  • 4 labs, 2 mentions in past reviews

Based on 70 reviews; source checked about 2 months ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Read reviews on BruinWalk

In Springs

Ran in 3 of the last 4 Springs.

From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.

From the registrar's catalog

Lecture, three hours; discussion, one hour. Nature and causes of weather phenomena, including atmospheric global circulation, clouds and storms, lightning and precipitation, fronts and cyclones, and tornadoes and hurricanes. P/NP or letter grading.

Sections in Spring 2026

Choose an open discussion to enroll; an open lecture alone does not mean a seat is available.

Seat counts as of : the oldest of these 4 readings. That term is over, so nothing has moved since.

  • Lec 1

    MW 9:30am-10:45am

    Open

    16 seats left in discussions.

    Lecture: 42 of 58 enrolled

    Mitchell, J.L. and Terrazas, A.

    3.57

    Predicted GPA

    Historical records for MITCHELL, JONATHAN LLOYD; 183 letter grades
    -
    3 discussions, all open.Every discussion, with its time and seats: 3 discussions
    • Dis 1A

      R 9:00am-9:50am · Mathematical Sciences 7124A

      Open

      6 seats left.

      13 of 19 enrolled

    • Dis 1B

      R 10:00am-10:50am · Mathematical Sciences 7124A

      Open

      6 seats left.

      13 of 19 enrolled

    • Dis 1C

      R 11:00am-11:50am · Mathematical Sciences 7124A

      Open

      4 seats left.

      16 of 20 enrolled

Final enrollment, averaged across each term's sections: between 27 and 110 a term over 12 terms, summer excluded, most recently 34 in Fall 2025. That is the shape across years, not this term, which is above.

From the people who took it

Student reviews

What taking A&O SCI 3 was like: the work, the teaching, and what students wish they’d known.

Your experience could be the first.

No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.

Looking for more perspectives?

External reviews are separate and do not count toward the dibs rating.

Read reviews on BruinWalk

Community guidelines

Seats over time in Spring 2026

How each lecture has filled since dibs first saw it.

A dot is a reading where something moved: the seat count, the status, or the waitlist.

What a flat run means, and where a line starts

Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.

Lec 1 · Mitchell, J.L. and Terrazas, A. · 42 of 58 enrolled

Unchanged over less than a minute

42 of 58 · 16 left in its discussions

Both readings say 42 of 58.

5 Sep 03:055 Sep 03:05
1 hour plotted. dibs read it.42 of 58 enrolled at the newest reading, about 2 months ago, with 16 left in its discussions. Seats from 5 Sep 03:05 to 5 Sep 03:05, 42 to 42. Recorded enrollment counts match. Checks are not continuous monitoring. Changes between checks may be missed.
How readings and alerts work

Dated seat counts can be available even when hourly check history is missing. Gaps do not show whether seats changed between observations.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.