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Season 1992

Every heat event the pipeline tracked between 1992-05-01 and 1992-09-30, with how each one grew, peaked and moved. Anomalies are against the 1991–2020 baseline.

Season at a glance

Events tracked: 12
Total heat burden: 36.66 Mkm²·days
Longest: 31days (#2)
Hottest: +18.3°C (#2)
With a heat dome: 7of 12 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 #2 — 1992-05-17 → 1992-06-16 31 daysheat dome · 29/31 d · Z500 +302 m

peak 1.12 M km² on 1992-05-29 · max +18.3 °C · mean +9.3 °C · burden 13.00 M km²·d · drift 1913 km (59.0 N 8.5 E → 65.9 N 43.3 E)

Event #10 — 1992-08-25 → 1992-09-02 9 daysheat dome · 8/9 d · Z500 +179 m

peak 1.72 M km² on 1992-08-30 · max +15.2 °C · mean +9.2 °C · burden 8.75 M km²·d · drift 1896 km (47.8 N 14.9 E → 56.5 N 39.1 E)

Event #1 — 1992-05-12 → 1992-05-26 15 dayshigh on 3/15 d only

peak 1.08 M km² on 1992-05-16 · max +14.2 °C · mean +8.0 °C · burden 4.80 M km²·d · drift 751 km (42.9 N 1.3 E → 48.8 N -3.5 E)

Event #7 — 1992-08-05 → 1992-08-12 8 daysheat dome · 8/8 d · Z500 +147 m

peak 919k km² on 1992-08-09 · max +14.4 °C · mean +8.0 °C · burden 3.10 M km²·d · drift 1316 km (45.9 N 7.0 E → 44.6 N 23.7 E)

Event #9 — 1992-08-17 → 1992-08-22 6 daysheat dome · 4/6 d · Z500 +111 m

peak 518k km² on 1992-08-20 · max +10.3 °C · mean +6.8 °C · burden 1.87 M km²·d · drift 979 km (45.8 N 8.3 E → 45.9 N 20.9 E)

Event #11 — 1992-09-06 → 1992-09-10 5 daysheat dome · 4/5 d · Z500 +266 m

peak 410k km² on 1992-09-07 · max +13.5 °C · mean +9.1 °C · burden 1.57 M km²·d · drift 360 km (60.0 N 41.2 E → 63.2 N 42.4 E)

Event #3 — 1992-05-18 → 1992-06-01 15 dayshigh on 4/15 d only

peak 252k km² on 1992-05-23 · max +10.2 °C · mean +7.2 °C · burden 1.10 M km²·d · drift 526 km (56.7 N 9.2 E → 52.8 N 4.8 E)

Event #12 — 1992-09-13 → 1992-09-20 8 dayshigh on 3/8 d only

peak 206k km² on 1992-09-15 · max +9.7 °C · mean +6.2 °C · burden 699k km²·d · drift 307 km (37.0 N -3.3 E → 39.8 N -3.5 E)

Event #5 — 1992-06-26 → 1992-07-01 6 daysheat dome · 4/6 d · Z500 +131 m

peak 174k km² on 1992-06-29 · max +11.1 °C · mean +7.9 °C · burden 575k km²·d · drift 319 km (55.0 N 9.8 E → 53.1 N 13.5 E)

Event #4 — 1992-06-24 → 1992-06-27 4 dayshigh on 2/4 d only

peak 139k km² on 1992-06-25 · max +8.7 °C · mean +6.7 °C · burden 431k km²·d · drift 214 km (62.0 N 11.0 E → 62.9 N 14.6 E)

Event #6 — 1992-07-25 → 1992-08-02 9 dayshigh on 4/9 d only

peak 108k km² on 1992-07-28 · max +8.3 °C · mean +5.6 °C · burden 381k km²·d · drift 242 km (41.1 N -7.1 E → 43.3 N -7.4 E)

Event #8 — 1992-08-15 → 1992-08-18 4 daysheat dome · 3/4 d · Z500 +128 m

peak 124k km² on 1992-08-16 · max +10.6 °C · mean +8.3 °C · burden 375k km²·d · drift 174 km (55.5 N 41.0 E → 54.3 N 42.7 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.

Pipeline figures, 1992