Every heat event the pipeline tracked between 2022-05-01 and 2022-09-30, with how each one grew, peaked and moved. Anomalies are against the 1991–2020 baseline.
Season at a glance
Events tracked
32
Total heat burden
117.31 Mkm²·days
Longest
29days (#19)
Hottest
+19.4°C (#15)
With a heat dome
9of 32 events
A heat dome is the stricter object: a tracked heat event with a closed 500 hPa anticyclone whose influence cap overlies it, after Loikith et al. (2026). Most heatwaves are not domes, so the label is a finding and not a synonym.
ERA5 daily maximum 2 m temperature over land, against the 1991–2020 climatology (p90 in a centred 15-day window). A heatwave cell is Tx above p90 on at least 3 consecutive days.
When the events ran
Overlapping bars are concurrent events in different places, not one event counted twice: each is a separately labelled cluster of contiguous heatwave cells.
How each event evolved
Event #25 — 2022-08-12 → 2022-09-06 26 daysheat dome · 14/26 d · Z500 +307 m
peak 1.79 M km² on 2022-08-27 · max +15.4 °C · mean +8.1 °C · burden 28.44 M km²·d · drift 2691 km (54.7 N 18.3 E → 38.0 N 44.2 E)
Event #12 — 2022-06-22 → 2022-07-12 21 daysheat dome · 12/21 d · Z500 +299 m
peak 2.20 M km² on 2022-06-27 · max +17.8 °C · mean +8.4 °C · burden 19.40 M km²·d · drift 1813 km (57.0 N 16.5 E → 53.2 N 44.4 E)
Event #15 — 2022-07-06 → 2022-08-02 28 daysheat dome · 15/28 d · Z500 +244 m
peak 1.08 M km² on 2022-07-18 · max +19.4 °C · mean +7.4 °C · burden 14.48 M km²·d · drift 2088 km (42.6 N -3.9 E → 39.1 N 20.6 E)
Event #1 — 2022-05-05 → 2022-05-28 24 daysheat dome · 18/24 d · Z500 +205 m
peak 1.11 M km² on 2022-05-18 · max +14.6 °C · mean +7.8 °C · burden 10.00 M km²·d · drift 1755 km (39.8 N -8.4 E → 42.6 N 12.2 E)
Event #8 — 2022-05-31 → 2022-06-21 22 dayshigh on 11/22 d only
peak 1.09 M km² on 2022-06-17 · max +17.8 °C · mean +8.8 °C · burden 9.01 M km²·d · drift 820 km (41.6 N -1.3 E → 45.9 N 7.0 E)
Event #4 — 2022-05-21 → 2022-06-09 20 dayshigh on 7/20 d only
peak 897k km² on 2022-06-04 · max +11.7 °C · mean +6.4 °C · burden 7.19 M km²·d · drift 1984 km (40.3 N 21.9 E → 38.7 N 45.0 E)
Event #19 — 2022-07-20 → 2022-08-17 29 dayshigh on 13/29 d only
peak 756k km² on 2022-08-12 · max +14.1 °C · mean +6.7 °C · burden 7.19 M km²·d · drift 2038 km (37.7 N -3.8 E → 53.2 N 10.4 E)
Event #30 — 2022-09-02 → 2022-09-16 15 dayshigh on 3/15 d only
peak 188k km² on 2022-09-13 · max +13.3 °C · mean +6.3 °C · burden 2.17 M km²·d · drift 84 km (36.1 N 7.3 E → 35.6 N 8.0 E)
Event #6 — 2022-05-29 → 2022-06-09 12 dayshigh on 3/12 d only
peak 169k km² on 2022-06-01 · max +13.9 °C · mean +7.8 °C · burden 1.37 M km²·d · drift 69 km (35.7 N 10.3 E → 35.2 N 10.6 E)
Event #22 — 2022-08-07 → 2022-08-15 9 daysheat dome · 7/9 d · Z500 +242 m
peak 199k km² on 2022-08-13 · max +12.5 °C · mean +7.7 °C · burden 1.30 M km²·d · drift 203 km (52.1 N -2.8 E → 52.6 N 0.1 E)
Event #21 — 2022-08-04 → 2022-08-08 5 daysheat dome · 3/5 d · Z500 +215 m
peak 403k km² on 2022-08-06 · max +12.2 °C · mean +7.1 °C · burden 1.30 M km²·d · drift 378 km (57.6 N 37.6 E → 56.2 N 43.3 E)
Event #5 — 2022-05-28 → 2022-06-06 10 dayshigh on 3/10 d only
peak 279k km² on 2022-06-01 · max +11.5 °C · mean +7.2 °C · burden 1.27 M km²·d · drift 92 km (44.8 N 43.0 E → 44.3 N 43.9 E)
Event #10 — 2022-06-07 → 2022-06-27 21 dayshigh on 10/21 d only
peak 139k km² on 2022-06-14 · max +12.7 °C · mean +6.8 °C · burden 1.25 M km²·d · drift 986 km (35.1 N -2.5 E → 36.1 N 8.4 E)
Event #23 — 2022-08-10 → 2022-08-19 10 dayshigh on 5/10 d only
peak 255k km² on 2022-08-14 · max +10.5 °C · mean +6.7 °C · burden 1.19 M km²·d · drift 393 km (59.8 N 9.9 E → 58.0 N 15.7 E)
Event #32 — 2022-09-16 → 2022-09-21 6 dayshigh on 1/6 d only
peak 297k km² on 2022-09-18 · max +12.1 °C · mean +5.4 °C · burden 1.15 M km²·d · drift 118 km (41.1 N 43.4 E → 40.1 N 44.1 E)
Event #28 — 2022-08-30 → 2022-09-15 17 daysno overlying high
peak 280k km² on 2022-09-11 · max +13.4 °C · mean +6.6 °C · burden 1.09 M km²·d · drift 586 km (38.5 N -0.3 E → 43.6 N 1.3 E)
Event #31 — 2022-09-15 → 2022-09-18 4 dayshigh on 2/4 d only
peak 324k km² on 2022-09-16 · max +12.2 °C · mean +7.7 °C · burden 1.00 M km²·d · drift 460 km (41.5 N 27.9 E → 39.9 N 32.9 E)
Event #7 — 2022-05-30 → 2022-06-08 10 dayshigh on 3/10 d only
peak 142k km² on 2022-06-04 · max +11.8 °C · mean +6.8 °C · burden 885k km²·d · drift 62 km (39.6 N 16.0 E → 39.3 N 15.3 E)
Event #3 — 2022-05-14 → 2022-05-26 13 dayshigh on 6/13 d only
peak 159k km² on 2022-05-22 · max +12.4 °C · mean +7.5 °C · burden 879k km²·d · drift 528 km (35.8 N 3.5 E → 35.0 N 9.3 E)
Event #29 — 2022-08-30 → 2022-09-07 9 daysno overlying high
peak 194k km² on 2022-09-05 · max +10.9 °C · mean +7.1 °C · burden 715k km²·d · drift 537 km (50.4 N 1.8 E → 51.6 N 9.2 E)
Event #16 — 2022-07-10 → 2022-07-21 12 daysno overlying high
peak 139k km² on 2022-07-16 · max +8.8 °C · mean +4.9 °C · burden 668k km²·d · drift 99 km (39.4 N 43.9 E → 38.6 N 44.5 E)
Event #18 — 2022-07-15 → 2022-07-20 6 daysheat dome · 5/6 d · Z500 +220 m
peak 190k km² on 2022-07-18 · max +18.7 °C · mean +9.6 °C · burden 666k km²·d · drift 435 km (50.4 N -4.4 E → 53.1 N 0.2 E)
Event #24 — 2022-08-11 → 2022-08-18 8 daysno overlying high
peak 222k km² on 2022-08-15 · max +9.8 °C · mean +6.9 °C · burden 660k km²·d · drift 444 km (47.8 N 44.8 E → 43.8 N 44.1 E)
Event #17 — 2022-07-10 → 2022-07-16 7 daysno overlying high
peak 189k km² on 2022-07-12 · max +12.1 °C · mean +8.4 °C · burden 606k km²·d · drift 928 km (59.8 N 43.4 E → 68.1 N 44.5 E)
Event #26 — 2022-08-22 → 2022-08-26 5 daysno overlying high
peak 208k km² on 2022-08-24 · max +11.5 °C · mean +8.3 °C · burden 557k km²·d · drift 229 km (50.3 N 7.1 E → 50.9 N 10.2 E)
Event #9 — 2022-05-31 → 2022-06-06 7 daysno overlying high
peak 144k km² on 2022-06-02 · max +12.2 °C · mean +9.3 °C · burden 541k km²·d · drift 495 km (63.6 N 42.4 E → 67.9 N 44.3 E)
Event #11 — 2022-06-17 → 2022-06-21 5 dayshigh on 1/5 d only
peak 200k km² on 2022-06-19 · max +8.4 °C · mean +5.5 °C · burden 526k km²·d · drift 133 km (38.7 N 44.3 E → 39.1 N 42.8 E)
Event #13 — 2022-07-01 → 2022-07-11 11 daysno overlying high
peak 109k km² on 2022-07-03 · max +8.7 °C · mean +5.6 °C · burden 479k km²·d · drift 750 km (40.8 N 15.4 E → 45.1 N 8.3 E)
Event #2 — 2022-05-08 → 2022-05-11 4 daysheat dome · 4/4 d · Z500 +198 m
peak 144k km² on 2022-05-09 · max +10.7 °C · mean +7.8 °C · burden 432k km²·d · drift 266 km (46.6 N -1.0 E → 47.3 N 2.4 E)
Event #20 — 2022-08-03 → 2022-08-05 3 dayshigh on 1/3 d only
peak 125k km² on 2022-08-03 · max +11.9 °C · mean +8.0 °C · burden 375k km²·d · drift 0 km (51.6 N 14.7 E → 51.6 N 14.7 E)
Event #14 — 2022-07-04 → 2022-07-06 3 dayshigh on 1/3 d only
peak 112k km² on 2022-07-05 · max +9.7 °C · mean +6.9 °C · burden 296k km²·d · drift 45 km (49.8 N 28.9 E → 49.4 N 29.0 E)
Event #27 — 2022-08-26 → 2022-08-28 3 daysheat dome · 2/3 d · Z500 +229 m
peak 140k km² on 2022-08-26 · max +10.7 °C · mean +8.4 °C · burden 249k km²·d · drift 355 km (68.1 N 32.6 E → 67.1 N 40.6 E)
Filled area is the event footprint in km² (left axis); the solid line is the peak anomaly inside it and the dashed line the mean (right axis). The small panel is the centroid path, circles sized by area and the ring marking day one. Drift is the straight-line start-to-end distance, so a dome that wandered and returned reports a small number.