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Built 2026-10-19 (19 October 2026)

Heat wave in United States, 7 to 16 December 2019

Heat wave in United States, 7 to 16 December 2019: 100 records at 37 stations, peak on 9 December 2019. Closed.

Data as of . Last revised (2026-10-17).

Key Facts

  • Heat wave in United States, 7 to 16 December 2019 set or tied 100 station records at 37 stations.
  • It ran from 7 December 2019 to 16 December 2019 (10 days) and its peak day was 9 December 2019.
  • Status: closed.
  • Yakutat AP set a monthly record high maximum temperature of 13.3 C (55.9 F) on 13 December 2019.
  • The busiest day was 9 December 2019 with 20 records.
  • The oldest broken record in the ranked list had stood for 86 years.

Footprint

7 to 16 December 2019
Footprint of Heat wave in United States, 7 to 16 December 2019 The area covered by Heat wave in United States, 7 to 16 December 2019 is outlined, with 15 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States, 7 to 16 December 2019 is outlined, with 15 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in United States, 7 to 16 December 2019: stations that set records in the event
StationTypeValueDate
Yakutat APRecord high maximum temperature13.3 C (55.9 F)2019-12-13
Barrow APRecord high minimum temperature-10.5 C (13.1 F)2019-12-10
Seward APRecord high maximum temperature10.0 C (50.0 F)2019-12-11
Anchorage Merrill FldRecord high minimum temperature0.0 C (32.0 F)2019-12-09
Moose Pass 3NWRecord high minimum temperature2.2 C (36.0 F)2019-12-12
Iliamna APRecord high minimum temperature4.4 C (39.9 F)2019-12-09
Talkeetna APRecord high maximum temperature6.1 C (43.0 F)2019-12-09
Cordova APRecord high maximum temperature9.4 C (48.9 F)2019-12-11
Kodiak APRecord high maximum temperature7.2 C (45.0 F)2019-12-15
Anchorage Ted Stevens Intl APRecord high maximum temperature10.6 C (51.1 F)2019-12-09
Sitka APRecord high minimum temperature8.3 C (46.9 F)2019-12-11
Chulitna RvrRecord high maximum temperature7.2 C (45.0 F)2019-12-09
MinchuminaRecord high maximum temperature1.1 C (34.0 F)2019-12-10
King SalmonRecord high minimum temperature2.2 C (36.0 F)2019-12-11
AlyeskaRecord high minimum temperature3.3 C (37.9 F)2019-12-12

Records per Day

Peak day 20
Records per day during Heat wave in United States, 7 to 16 December 2019 Records set or tied each day from 7 December 2019 to 16 December 2019. The most in one day was 20 on 9 December 2019. 0 5 10 15 20 12-0712-0812-0912-1012-1112-1212-1312-1412-1512-16
Records set or tied each day from 7 December 2019 to 16 December 2019. The most in one day was 20 on 9 December 2019.
Records per day during Heat wave in United States, 7 to 16 December 2019
DateRecords
2019-12-075
2019-12-086
2019-12-0920
2019-12-1017
2019-12-1112
2019-12-1214
2019-12-137
2019-12-143
2019-12-1512
2019-12-164

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States, 7 to 16 December 2019 ranked by margin
Yakutat AP, 12-132.2 C (4.0 F)
Anchorage Ted Stevens Intl AP, 12-142.2 C (4.0 F)
Anchorage Ted Stevens Intl AP, 12-091.7 C (3.1 F)
Yakutat AP, 12-151.7 C (3.1 F)
Iliamna AP, 12-091.6 C (2.9 F)
Alyeska, 12-121.6 C (2.9 F)
Seward AP, 12-111.1 C (2.0 F)
Seward AP, 12-081.1 C (2.0 F)
Anchorage Ted Stevens Intl AP, 12-091.1 C (2.0 F)
Anchorage Merrill Fld, 12-090.6 C (1.1 F)
Moose Pass 3NW, 12-120.5 C (0.9 F)
Kodiak AP, 12-150.5 C (0.9 F)
Iliamna AP, 12-160.5 C (0.9 F)
Cordova AP, 12-110.5 C (0.9 F)
Talkeetna AP, 12-090.5 C (0.9 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

Margin against age of the broken record in Heat wave in United States, 7 to 16 December 2019 100 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right. 0 25 50 75 100 0.01.53.04.56.0 Margin (C) Years the old record stood
100 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.
Margin against age of the broken record in Heat wave in United States, 7 to 16 December 2019
Margin (C)Years the old record stood
2.259
0.186
0.684
1.178
0.576
1.158
1.657
0.564
0.558
0.556
0.558
1.727
0.556
0.533
0.558
1.70
0.557
1.158
2.252
1.656
3.913
2.837
1.749
1.10
0.646
0.517
0.652
1.133
1.132
0.519
2.232
0.540
0.633
2.329
1.133
0.632
1.632
1.733
0.633
0.533
1.133
2.224
1.716
1.613
4.49
1.132
1.132
0.633
1.716
1.129
0.632
1.113
2.313
1.113
0.613
5.513
1.129
0.632
0.529
0.632
0.633
0.513
0.613
1.716
3.813
0.532
1.71
0.616
2.213
0.513
1.713
1.29
1.113
1.113
2.24
0.614
0.516
1.14
2.213
0.64
0.612
0.51
0.51
1.64
0.55
0.64
1.71
0.616
0.51
1.71
2.29
2.21
2.21
1.11
0.64
0.54
0.64
0.64
0.61
1.11

Compared With Other Events

Station records per event
Station records in Heat wave in United States, 7 to 16 December 2019 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in United States, 7 to 16 December 2019 (this event)100 records

Every Record Set

20 of 100
Every record set or tied during Heat wave in United States, 7 to 16 December 2019, in date order
DateStationRecordValueMarginYears stoodSignificance
2019-12-08Seward APRecord high maximum temperature8.3 C (46.9 F)1.1 C (2.0 F)5829 of 100 (Routine)
2019-12-09Anchorage Merrill FldRecord high minimum temperature0.0 C (32.0 F)0.6 C (1.1 F)8435 of 100 (Notable)
2019-12-09Iliamna APRecord high minimum temperature4.4 C (39.9 F)1.6 C (2.9 F)5728 of 100 (Routine)
2019-12-09Talkeetna APRecord high maximum temperature6.1 C (43.0 F)0.5 C (0.9 F)5827 of 100 (Routine)
2019-12-09Anchorage Ted Stevens Intl APRecord high maximum temperature10.6 C (51.1 F)1.7 C (3.1 F)2726 of 100 (Routine)
2019-12-09Chulitna RvrRecord high maximum temperature7.2 C (45.0 F)0.5 C (0.9 F)3324 of 100 (Routine)
2019-12-09Anchorage Ted Stevens Intl APRecord high minimum temperature1.7 C (35.1 F)1.1 C (2.0 F)5824 of 100 (Routine)
2019-12-10Barrow APRecord high minimum temperature-10.5 C (13.1 F)0.1 C (0.2 F)8636 of 100 (Notable)
2019-12-10MinchuminaRecord high maximum temperature1.1 C (34.0 F)0.5 C (0.9 F)5824 of 100 (Routine)
2019-12-11Seward APRecord high maximum temperature10.0 C (50.0 F)1.1 C (2.0 F)7835 of 100 (Notable)
2019-12-11Cordova APRecord high maximum temperature9.4 C (48.9 F)0.5 C (0.9 F)5627 of 100 (Routine)
2019-12-11Sitka APRecord high minimum temperature8.3 C (46.9 F)0.5 C (0.9 F)5625 of 100 (Routine)
2019-12-11King SalmonRecord high minimum temperature2.2 C (36.0 F)0.5 C (0.9 F)5724 of 100 (Routine)
2019-12-12Moose Pass 3NWRecord high minimum temperature2.2 C (36.0 F)0.5 C (0.9 F)7629 of 100 (Routine)
2019-12-12AlyeskaRecord high minimum temperature3.3 C (37.9 F)1.6 C (2.9 F)5623 of 100 (Routine)
2019-12-13Yakutat APRecord high maximum temperature13.3 C (55.9 F)2.2 C (4.0 F)5942 of 100 (Notable)
2019-12-14Anchorage Ted Stevens Intl APRecord high maximum temperature7.2 C (45.0 F)2.2 C (4.0 F)5224 of 100 (Routine)
2019-12-15Kodiak APRecord high maximum temperature7.2 C (45.0 F)0.5 C (0.9 F)6427 of 100 (Routine)
2019-12-15Yakutat APRecord high maximum temperature16.1 C (61.0 F)1.7 C (3.1 F)024 of 100 (Routine)
2019-12-16Iliamna APRecord high minimum temperature3.3 C (37.9 F)0.5 C (0.9 F)5827 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 100 records the event counts. The counts above use the full total.

Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.