Every heat event the pipeline tracked between 2010-05-01 and 2010-09-30, with how each one grew, peaked and moved. Anomalies are against the 1991–2020 baseline.
Season at a glance
Events tracked
18
Total heat burden
113.61 Mkm²·days
Longest
57days (#11)
Hottest
+20.1°C (#1)
With a heat dome
8of 18 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 #11 — 2010-07-03 → 2010-08-28 57 daysheat dome · 37/57 d · Z500 +266 m
peak 2.27 M km² on 2010-08-13 · max +15.6 °C · mean +9.0 °C · burden 73.00 M km²·d · drift 3008 km (63.2 N 23.4 E → 37.3 N 36.0 E)
Event #1 — 2010-05-02 → 2010-05-22 21 daysheat dome · 17/21 d · Z500 +346 m
peak 1.17 M km² on 2010-05-15 · max +20.1 °C · mean +10.4 °C · burden 13.62 M km²·d · drift 864 km (54.9 N 42.0 E → 58.5 N 29.5 E)
Event #8 — 2010-06-08 → 2010-06-18 11 daysheat dome · 7/11 d · Z500 +154 m
peak 2.04 M km² on 2010-06-13 · max +11.8 °C · mean +7.0 °C · burden 10.88 M km²·d · drift 1181 km (47.8 N 21.2 E → 37.7 N 25.9 E)
Event #9 — 2010-06-21 → 2010-07-01 11 daysheat dome · 10/11 d · Z500 +170 m
peak 911k km² on 2010-06-26 · max +13.6 °C · mean +8.7 °C · burden 5.09 M km²·d · drift 416 km (54.1 N 35.4 E → 51.5 N 30.9 E)
Event #6 — 2010-05-27 → 2010-06-07 12 dayshigh on 4/12 d only
peak 518k km² on 2010-06-03 · max +12.4 °C · mean +6.5 °C · burden 2.82 M km²·d · drift 898 km (41.5 N 35.9 E → 37.5 N 45.0 E)
Event #16 — 2010-08-28 → 2010-09-08 12 daysno overlying high
peak 216k km² on 2010-09-01 · max +12.9 °C · mean +6.1 °C · burden 1.76 M km²·d · drift 400 km (42.9 N 43.3 E → 39.4 N 44.1 E)
Event #15 — 2010-08-26 → 2010-09-01 7 daysno overlying high
peak 293k km² on 2010-08-30 · max +10.5 °C · mean +5.6 °C · burden 972k km²·d · drift 798 km (36.4 N 29.9 E → 39.9 N 37.9 E)
Event #14 — 2010-07-30 → 2010-08-03 5 daysno overlying high
peak 343k km² on 2010-07-31 · max +9.7 °C · mean +6.1 °C · burden 923k km²·d · drift 201 km (37.3 N 36.2 E → 35.6 N 37.0 E)
Event #3 — 2010-05-20 → 2010-05-25 6 dayshigh on 2/6 d only
peak 177k km² on 2010-05-22 · max +11.2 °C · mean +7.4 °C · burden 636k km²·d · drift 405 km (54.3 N -1.7 E → 50.8 N -3.2 E)
Event #12 — 2010-07-04 → 2010-07-08 5 dayshigh on 2/5 d only
peak 157k km² on 2010-07-05 · max +12.5 °C · mean +6.9 °C · burden 519k km²·d · drift 418 km (39.0 N -7.6 E → 42.7 N -7.0 E)
Event #18 — 2010-09-12 → 2010-09-15 4 dayshigh on 1/4 d only
peak 167k km² on 2010-09-13 · max +8.8 °C · mean +6.0 °C · burden 507k km²·d · drift 300 km (40.0 N -7.6 E → 39.4 N -4.2 E)
Event #2 — 2010-05-10 → 2010-05-17 8 dayshigh on 2/8 d only
peak 148k km² on 2010-05-12 · max +8.2 °C · mean +6.6 °C · burden 472k km²·d · drift 245 km (36.7 N 39.6 E → 38.8 N 38.9 E)
Event #13 — 2010-07-09 → 2010-07-13 5 daysheat dome · 4/5 d · Z500 +227 m
peak 126k km² on 2010-07-11 · max +12.2 °C · mean +8.5 °C · burden 463k km²·d · drift 219 km (56.6 N 15.2 E → 58.6 N 15.9 E)
Event #4 — 2010-05-21 → 2010-05-25 5 dayshigh on 2/5 d only
peak 139k km² on 2010-05-23 · max +10.5 °C · mean +7.3 °C · burden 437k km²·d · drift 374 km (48.0 N -3.1 E → 49.1 N 1.7 E)
Event #17 — 2010-09-06 → 2010-09-09 4 daysheat dome · 4/4 d · Z500 +268 m
peak 120k km² on 2010-09-07 · max +8.9 °C · mean +6.0 °C · burden 423k km²·d · drift 52 km (65.7 N 16.9 E → 66.2 N 17.0 E)
Event #5 — 2010-05-25 → 2010-06-01 8 daysno overlying high
peak 104k km² on 2010-05-28 · max +7.2 °C · mean +5.2 °C · burden 394k km²·d · drift 432 km (42.9 N 27.9 E → 39.0 N 27.4 E)
Event #10 — 2010-06-27 → 2010-07-03 7 daysheat dome · 6/7 d · Z500 +193 m
peak 120k km² on 2010-07-01 · max +12.8 °C · mean +8.9 °C · burden 392k km²·d · drift 63 km (51.9 N 7.5 E → 51.4 N 7.5 E)
Event #7 — 2010-06-02 → 2010-06-04 3 daysheat dome · 3/3 d · Z500 +152 m
peak 101k km² on 2010-06-02 · max +10.5 °C · mean +8.3 °C · burden 303k km²·d · drift 0 km (52.5 N 43.7 E → 52.5 N 43.7 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.