Every heat event the pipeline tracked between 2000-05-01 and 2000-09-30, with how each one grew, peaked and moved. Anomalies are against the 1991–2020 baseline.
Season at a glance
Events tracked
26
Total heat burden
51.14 Mkm²·days
Longest
19days (#15)
Hottest
+15.6°C (#12)
With a heat dome
14of 26 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 #15 — 2000-07-02 → 2000-07-20 19 dayshigh on 6/19 d only
peak 980k km² on 2000-07-05 · max +15.4 °C · mean +5.8 °C · burden 7.57 M km²·d · drift 1701 km (42.9 N 26.0 E → 36.9 N 44.4 E)
Event #20 — 2000-08-15 → 2000-08-27 13 dayshigh on 6/13 d only
peak 1.64 M km² on 2000-08-21 · max +13.2 °C · mean +7.3 °C · burden 7.39 M km²·d · drift 314 km (45.5 N 12.0 E → 42.7 N 12.4 E)
Event #12 — 2000-06-12 → 2000-06-26 15 daysheat dome · 11/15 d · Z500 +192 m
peak 1.14 M km² on 2000-06-21 · max +15.6 °C · mean +8.8 °C · burden 6.12 M km²·d · drift 3118 km (37.3 N -8.8 E → 41.8 N 27.4 E)
Event #19 — 2000-07-24 → 2000-08-03 11 daysheat dome · 6/11 d · Z500 +153 m
peak 997k km² on 2000-07-29 · max +13.5 °C · mean +5.6 °C · burden 5.88 M km²·d · drift 1705 km (42.8 N 25.1 E → 38.8 N 44.7 E)
Event #3 — 2000-05-12 → 2000-05-19 8 dayshigh on 4/8 d only
peak 1.17 M km² on 2000-05-16 · max +13.5 °C · mean +8.4 °C · burden 3.85 M km²·d · drift 1355 km (52.3 N 4.6 E → 50.0 N 23.7 E)
Event #14 — 2000-06-22 → 2000-06-30 9 daysheat dome · 9/9 d · Z500 +234 m
peak 404k km² on 2000-06-26 · max +14.8 °C · mean +8.8 °C · burden 2.58 M km²·d · drift 212 km (62.4 N 36.0 E → 64.0 N 38.4 E)
Event #11 — 2000-06-10 → 2000-06-16 7 daysheat dome · 6/7 d · Z500 +191 m
peak 581k km² on 2000-06-13 · max +11.7 °C · mean +7.1 °C · burden 2.27 M km²·d · drift 876 km (47.1 N 18.2 E → 42.3 N 27.0 E)
Event #1 — 2000-05-05 → 2000-05-12 8 dayshigh on 2/8 d only
peak 422k km² on 2000-05-10 · max +10.6 °C · mean +7.9 °C · burden 1.99 M km²·d · drift 502 km (51.5 N 9.0 E → 48.7 N 14.6 E)
Event #10 — 2000-06-03 → 2000-06-07 5 daysheat dome · 4/5 d · Z500 +122 m
peak 590k km² on 2000-06-05 · max +11.0 °C · mean +7.0 °C · burden 1.82 M km²·d · drift 718 km (51.5 N 20.9 E → 46.7 N 27.6 E)
Event #17 — 2000-07-15 → 2000-07-25 11 dayshigh on 5/11 d only
peak 220k km² on 2000-07-19 · max +15.4 °C · mean +8.7 °C · burden 1.20 M km²·d · drift 185 km (63.0 N 44.5 E → 61.4 N 45.0 E)
Event #9 — 2000-05-29 → 2000-06-01 4 daysheat dome · 3/4 d · Z500 +236 m
peak 371k km² on 2000-05-30 · max +14.9 °C · mean +9.8 °C · burden 1.12 M km²·d · drift 245 km (59.2 N 38.8 E → 58.9 N 43.0 E)
Event #21 — 2000-08-17 → 2000-09-02 17 dayshigh on 4/17 d only
peak 118k km² on 2000-08-25 · max +9.8 °C · mean +5.8 °C · burden 1.10 M km²·d · drift 512 km (36.4 N 2.8 E → 35.5 N 8.4 E)
Event #4 — 2000-05-12 → 2000-05-17 6 daysheat dome · 5/6 d · Z500 +268 m
peak 251k km² on 2000-05-15 · max +12.9 °C · mean +8.9 °C · burden 1.01 M km²·d · drift 215 km (60.6 N 9.3 E → 59.5 N 12.5 E)
Event #16 — 2000-07-13 → 2000-07-24 12 dayshigh on 5/12 d only
peak 207k km² on 2000-07-19 · max +14.5 °C · mean +8.6 °C · burden 888k km²·d · drift 28 km (66.9 N 40.6 E → 66.6 N 40.5 E)
Event #23 — 2000-09-06 → 2000-09-11 6 daysheat dome · 4/6 d · Z500 +151 m
peak 195k km² on 2000-09-08 · max +9.0 °C · mean +6.0 °C · burden 695k km²·d · drift 403 km (42.3 N -6.3 E → 40.4 N -2.1 E)
Event #18 — 2000-07-20 → 2000-07-24 5 daysno overlying high
peak 180k km² on 2000-07-23 · max +8.2 °C · mean +5.4 °C · burden 695k km²·d · drift 13 km (42.8 N 43.8 E → 42.7 N 43.7 E)
Event #2 — 2000-05-07 → 2000-05-12 6 daysno overlying high
peak 203k km² on 2000-05-10 · max +9.7 °C · mean +7.2 °C · burden 646k km²·d · drift 52 km (45.4 N 19.9 E → 45.5 N 19.3 E)
Event #24 — 2000-09-11 → 2000-09-19 9 dayshigh on 1/9 d only
peak 196k km² on 2000-09-15 · max +8.7 °C · mean +5.7 °C · burden 634k km²·d · drift 224 km (39.6 N -2.0 E → 37.7 N -1.5 E)
Event #5 — 2000-05-22 → 2000-05-25 4 daysheat dome · 3/4 d · Z500 +198 m
peak 203k km² on 2000-05-23 · max +14.5 °C · mean +10.5 °C · burden 619k km²·d · drift 175 km (63.6 N 40.0 E → 65.1 N 41.0 E)
Event #7 — 2000-05-26 → 2000-05-29 4 daysheat dome · 3/4 d · Z500 +129 m
peak 185k km² on 2000-05-27 · max +10.8 °C · mean +7.4 °C · burden 568k km²·d · drift 152 km (47.7 N 25.4 E → 49.0 N 26.0 E)
Event #25 — 2000-09-18 → 2000-09-23 6 dayshigh on 1/6 d only
peak 142k km² on 2000-09-21 · max +11.4 °C · mean +6.0 °C · burden 539k km²·d · drift 428 km (40.6 N 27.7 E → 38.1 N 31.4 E)
Event #13 — 2000-06-16 → 2000-06-19 4 daysheat dome · 4/4 d · Z500 +192 m
peak 137k km² on 2000-06-17 · max +12.7 °C · mean +7.5 °C · burden 455k km²·d · drift 102 km (52.9 N -3.2 E → 53.2 N -1.8 E)
Event #26 — 2000-09-21 → 2000-09-24 4 daysheat dome · 3/4 d · Z500 +311 m
peak 128k km² on 2000-09-22 · max +8.5 °C · mean +5.5 °C · burden 409k km²·d · drift 272 km (68.9 N 23.0 E → 69.0 N 29.8 E)
Event #8 — 2000-05-28 → 2000-06-03 7 daysheat dome · 6/7 d · Z500 +144 m
peak 116k km² on 2000-05-31 · max +8.6 °C · mean +5.9 °C · burden 405k km²·d · drift 299 km (38.4 N -0.9 E → 37.7 N -4.3 E)
Event #6 — 2000-05-26 → 2000-05-29 4 daysheat dome · 3/4 d · Z500 +129 m
peak 127k km² on 2000-05-27 · max +9.2 °C · mean +6.5 °C · burden 389k km²·d · drift 281 km (45.4 N 20.4 E → 44.0 N 23.4 E)
Event #22 — 2000-08-26 → 2000-08-29 4 dayshigh on 2/4 d only
peak 103k km² on 2000-08-27 · max +7.4 °C · mean +5.7 °C · burden 310k km²·d · drift 105 km (67.6 N 23.6 E → 66.9 N 21.9 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.