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Built 2026-10-19 (19 October 2026)

Heat wave in United States, 3 to 19 August 2019

Heat wave in United States, 3 to 19 August 2019: 143 records at 33 stations, peak on 7 August 2019. Closed.

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

Key Facts

  • Heat wave in United States, 3 to 19 August 2019 set or tied 143 station records at 33 stations.
  • It ran from 3 August 2019 to 19 August 2019 (17 days) and its peak day was 7 August 2019.
  • Status: closed.
  • Kenai AP set an all-time record high minimum temperature of 16.1 C (61.0 F) on 6 August 2019.
  • The busiest day was 7 August 2019 with 19 records.
  • The oldest broken record in the ranked list had stood for 100 years.

Footprint

3 to 19 August 2019
Footprint of Heat wave in United States, 3 to 19 August 2019 The area covered by Heat wave in United States, 3 to 19 August 2019 is outlined, with 12 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States, 3 to 19 August 2019 is outlined, with 12 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in United States, 3 to 19 August 2019: stations that set records in the event
StationTypeValueDate
Kenai APRecord high minimum temperature16.1 C (61.0 F)2019-08-06
Seward APRecord high minimum temperature16.7 C (62.1 F)2019-08-17
Matanuska Exp FarmRecord high maximum temperature26.7 C (80.1 F)2019-08-08
Anchorage Merrill FldRecord high maximum temperature24.4 C (75.9 F)2019-08-15
Kodiak APRecord high minimum temperature16.1 C (61.0 F)2019-08-15
Homer APRecord high maximum temperature22.8 C (73.0 F)2019-08-17
Cordova APRecord high maximum temperature28.9 C (84.0 F)2019-08-07
Gulkana APRecord high minimum temperature13.3 C (55.9 F)2019-08-06
AlyeskaRecord high minimum temperature15.0 C (59.0 F)2019-08-14
Nenana Muni APRecord high minimum temperature16.7 C (62.1 F)2019-08-03
Port San JuanRecord high maximum temperature28.3 C (82.9 F)2019-08-07
Kitoi BayRecord high maximum temperature27.8 C (82.0 F)2019-08-18

Records per Day

Peak day 19
Records per day during Heat wave in United States, 3 to 19 August 2019 Records set or tied each day from 3 August 2019 to 19 August 2019. The most in one day was 19 on 7 August 2019. 0 5 10 15 20 08-0308-0508-0708-0908-1108-1308-1508-1708-19
Records set or tied each day from 3 August 2019 to 19 August 2019. The most in one day was 19 on 7 August 2019.
Records per day during Heat wave in United States, 3 to 19 August 2019
DateRecords
2019-08-035
2019-08-044
2019-08-055
2019-08-0613
2019-08-0719
2019-08-088
2019-08-093
2019-08-107
2019-08-115
2019-08-125
2019-08-1314
2019-08-1411
2019-08-1516
2019-08-1611
2019-08-1711
2019-08-185
2019-08-191

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States, 3 to 19 August 2019 ranked by margin
Kitoi Bay, 08-183.9 C (7.0 F)
Kodiak AP, 08-073.3 C (5.9 F)
Kodiak AP, 08-152.8 C (5.0 F)
Homer AP, 08-172.8 C (5.0 F)
Nenana Muni AP, 08-032.8 C (5.0 F)
Port San Juan, 08-072.7 C (4.9 F)
Seward AP, 08-172.3 C (4.1 F)
Seward AP, 08-072.2 C (4.0 F)
Cordova AP, 08-072.2 C (4.0 F)
Homer AP, 08-081.7 C (3.1 F)
Kitoi Bay, 08-071.7 C (3.1 F)
Gulkana AP, 08-061.6 C (2.9 F)
Matanuska Exp Farm, 08-081.1 C (2.0 F)
Anchorage Merrill Fld, 08-131.1 C (2.0 F)
Kenai AP, 08-031.1 C (2.0 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, 3 to 19 August 2019 143 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 0.01.32.53.85.0 Margin (C) Years the old record stood
143 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, 3 to 19 August 2019
Margin (C)Years the old record stood
0.568
2.374
1.196
0.5100
1.188
1.156
1.188
2.866
2.261
2.856
3.361
2.261
1.664
0.651
0.570
2.725
2.849
3.944
1.750
1.761
3.917
0.561
1.161
0.568
1.744
1.158
2.828
0.561
0.525
0.615
1.156
1.625
1.641
0.630
3.717
1.740
4.514
2.814
1.134
0.524
0.550
1.140
3.124
2.824
0.634
1.144
2.234
3.414
1.717
2.214
3.914
2.820
0.819
3.314
2.621
0.641
0.625
1.117
1.616
1.117
0.59
1.125
0.534
1.632
1.130
4.024
1.116
0.634
1.214
2.213
1.10
1.134
1.128
2.221
2.818
0.638
0.538
2.98
0.617
1.113
1.124
1.724
2.30
2.217
1.717
1.625
1.112
0.628
1.716
0.628
0.536
1.625
1.125
1.117
1.034
2.113
1.325
1.117
0.516
0.613
0.528
0.529
0.624
1.617
2.80
1.113
2.021
1.224
1.624
2.813
0.524
1.121
1.614
0.616
1.712
1.114
1.624
0.629
1.64
1.612
0.514
0.514
1.114
0.825
0.624
1.914
0.616
0.614
0.324
0.225
1.61
0.613
0.513
0.64
0.514
0.614
0.512
0.512
0.214
0.68
0.50
0.61
0.50

Compared With Other Events

Station records per event
Station records in Heat wave in United States, 3 to 19 August 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, 3 to 19 August 2019 (this event)143 records

Every Record Set

20 of 143
Every record set or tied during Heat wave in United States, 3 to 19 August 2019, in date order
DateStationRecordValueMarginYears stoodSignificance
2019-08-03Kenai APRecord high minimum temperature15.0 C (59.0 F)1.1 C (2.0 F)5640 of 100 (Notable)
2019-08-03Nenana Muni APRecord high minimum temperature16.7 C (62.1 F)2.8 C (5.0 F)4931 of 100 (Routine)
2019-08-06Kenai APRecord high minimum temperature16.1 C (61.0 F)0.5 C (0.9 F)6851 of 100 (Notable)
2019-08-06Gulkana APRecord high minimum temperature13.3 C (55.9 F)1.6 C (2.9 F)6433 of 100 (Routine)
2019-08-07Seward APRecord high minimum temperature18.9 C (66.0 F)2.2 C (4.0 F)6137 of 100 (Notable)
2019-08-07Kodiak APRecord high maximum temperature27.2 C (81.0 F)3.3 C (5.9 F)6135 of 100 (Notable)
2019-08-07Cordova APRecord high maximum temperature28.9 C (84.0 F)2.2 C (4.0 F)6135 of 100 (Notable)
2019-08-07Port San JuanRecord high maximum temperature28.3 C (82.9 F)2.7 C (4.9 F)2531 of 100 (Routine)
2019-08-07Kitoi BayRecord high maximum temperature25.6 C (78.1 F)1.7 C (3.1 F)6129 of 100 (Routine)
2019-08-08Matanuska Exp FarmRecord high maximum temperature26.7 C (80.1 F)1.1 C (2.0 F)9641 of 100 (Notable)
2019-08-08Homer APRecord high maximum temperature25.0 C (77.0 F)1.7 C (3.1 F)5030 of 100 (Routine)
2019-08-13Anchorage Merrill FldRecord high minimum temperature16.1 C (61.0 F)1.1 C (2.0 F)8840 of 100 (Notable)
2019-08-13Matanuska Exp FarmRecord high minimum temperature13.9 C (57.0 F)1.1 C (2.0 F)8839 of 100 (Notable)
2019-08-14AlyeskaRecord high minimum temperature15.0 C (59.0 F)0.6 C (1.1 F)5132 of 100 (Routine)
2019-08-15Anchorage Merrill FldRecord high maximum temperature24.4 C (75.9 F)0.5 C (0.9 F)10041 of 100 (Notable)
2019-08-15Kodiak APRecord high minimum temperature16.1 C (61.0 F)2.8 C (5.0 F)6639 of 100 (Notable)
2019-08-16Matanuska Exp FarmRecord high minimum temperature13.3 C (55.9 F)0.5 C (0.9 F)7032 of 100 (Routine)
2019-08-17Seward APRecord high minimum temperature16.7 C (62.1 F)2.3 C (4.1 F)7442 of 100 (Notable)
2019-08-17Homer APRecord high maximum temperature22.8 C (73.0 F)2.8 C (5.0 F)5636 of 100 (Notable)
2019-08-18Kitoi BayRecord high maximum temperature27.8 C (82.0 F)3.9 C (7.0 F)4430 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 143 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.