Overview Realtime Historical Map View
Extreme Heat Watch
2026-07-27T20:00:00-07:00

* WHAT...Dangerously hot conditions possible. Afternoon temperatures 104 to 113. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...From Wednesday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Brock Reservoir Inlet Near Calexico Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019
01-01 320.71
01-02 363.86
01-04 19.48
01-05 8.77
01-06 4.33
01-07 25.65
01-08 380.46
01-09 253.36
01-10 163.95
01-11 130.84
01-12 330.02
01-13 565.75
01-14 622.59
01-15 298.09
01-16 696.0
01-17 575.81
01-18 10.76
01-19 523.23
01-20 726.8
01-21 424.0
01-22 239.0
01-23 231.0
01-24 438.76
01-25 6.92
01-26 116.95
01-27 6.6
01-28 272.81
01-29 395.2
01-30 298.27
01-31 322.0
02-01 77.32
02-02 228.35
02-03 265.7
02-04 197.57
02-05 248.78
02-06 158.84
02-07 158.06
02-08 233.39
02-09 373.18
02-10 115.7
02-11 246.1
02-12 69.07
02-13 8.97
02-14 106.19
02-15 426.17
02-16 194.98
02-17 9.75
02-18 103.92
02-19 825.71
02-20 201.16
02-21 147.65
02-22 174.77
02-23 185.08
02-24 86.29
02-25 293.3
02-26 67.7
02-27 226.59
02-28 213.03
02-29 1090.0
03-01 310.37
03-02 167.35
03-03 259.79
03-04 284.72
03-05 323.57
03-06 468.86
03-07 272.94
03-08 250.44
03-09 417.36
03-10 298.11
03-11 269.31
03-12 235.9
03-13 192.12
03-14 74.89
03-15 325.63
03-16 580.23
03-17 231.3
03-18 67.93
03-19 495.5
03-20 15.24
03-21 8.68
03-22 21.91
03-23 114.94
03-24 44.72
03-25 214.12
03-26 68.51
03-27 535.1
03-28 49.01
03-29 351.51
03-30 861.03
03-31 644.4
04-01 886.0
04-02 407.4
04-03 365.1
04-04 346.74
04-05 405.31
04-06 417.18
04-07 132.2
04-08 13.0
04-09 4.2
04-10 42.02
04-11 97.59
04-12 21.15
04-13 567.38
04-14 246.43
04-15 120.34
04-16 477.12
04-17 777.2
04-18 296.68
04-19 310.16
04-20 322.07
04-21 316.51
04-22 226.94
04-23 437.22
04-24 591.9
04-25 5.95
04-26 48.71
04-27 151.9
04-28 389.37
04-29 247.75
04-30 418.8
05-01 640.89
05-02 186.08
05-03 179.99
05-04 647.9
05-05 397.3
05-06 106.61
05-07 352.07
05-08 218.48
05-09 61.17
05-10 17.76
05-11 6.29
05-12 21.87
05-13 151.71
05-14 303.2
05-15 558.5
05-16 629.61
05-17 11.25
05-18 241.42
05-19 77.33
05-20 200.26
05-21 211.83
05-22 769.63
05-23 666.77
05-24 259.48
05-25 7.25
05-26 6.68
05-27 74.89
05-28 135.25
05-29 89.26
05-30 331.73
05-31 104.23
06-01 265.76
06-02 343.13
06-03 118.0
06-04 228.2
06-05 194.3
06-06 442.13
06-07 46.34
06-08 118.86
06-09 268.36
06-10 157.0
06-11 586.0
06-12 116.94
06-13 94.63
06-14 20.82
06-15 333.67
06-16 718.8
06-17 606.44
06-18 266.0
06-19 456.57
06-20 199.6
06-21 251.08
06-22 8.7
06-23 26.7
06-24 313.6
06-25 481.56
06-26 400.16
06-27 828.2
06-28 434.07
06-29 161.88
06-30 8.68
07-01 67.42
07-02 332.7
07-03 158.35
07-04 402.56
07-05 497.98
07-06 452.6
07-07 334.16
07-08 120.06
07-09 9.61
07-10 4.37
07-11 8.29
07-12 181.87
07-13 400.86
07-14 104.12
07-15 533.68
07-16 352.14
07-17 367.93
07-18 174.3
07-19 239.7
07-20 420.47
07-21 122.81
07-22 114.75
07-23 704.36
07-24 246.94
07-25 256.0
07-26 239.71
07-27 342.75
07-28 369.39
07-29 514.15
07-30 448.79
07-31 101.34
08-01 8.8
08-02 162.73
08-03 287.4
08-04 239.34
08-05 6.75
08-06 10.92
08-07 413.4
08-08 211.47
08-09 633.46
08-10 566.7
08-11 646.67
08-12 836.13
08-13 467.74
08-14 577.07
08-15 15.07
08-16 234.99
08-17 390.65
08-18 202.18
08-19 747.5
08-20 962.0
08-21 221.5
08-22 506.37
08-23 319.41
08-24 502.35
08-25 195.82
08-26 412.67
08-27 102.21
08-28 314.07
08-29 311.67
08-30 192.69
08-31 501.5
09-01 522.25
09-02 625.33
09-03 359.96
09-04 223.5
09-05 9.6
09-06 32.79
09-07 289.0
09-08 508.92
09-09 416.66
09-10 27.01
09-11 143.07
09-12 527.62
09-13 164.97
09-14 803.0
09-15 676.0
09-16 232.74
09-17 259.67
09-18 399.63
09-19 208.38
09-20 112.52
09-21 386.86
09-22 134.59
09-23 682.25
09-24 721.67
09-25 1010.5
09-26 664.82
09-27 235.41
09-28 733.16
09-29 274.35
09-30 115.38
10-01 460.74
10-02 334.0
10-03 289.0
10-04 26.23
10-05 8.49
10-06 514.29
10-07 767.75
10-08 720.5
10-09 275.18
10-10 8.98
10-11 9.06
10-12 157.79
10-13 298.87
10-14 716.75
10-15 630.0
10-16 284.5
10-17 111.69
10-18 351.43
10-19 49.9
10-20 4.25
10-21 312.5
10-22 207.26
10-23 121.38
10-24 423.37
10-25 471.13
10-26 360.97
10-27 268.05
10-28 131.14
10-29 241.39
10-30 516.67
10-31 171.8
11-01 151.95
11-02 241.63
11-03 153.31
11-04 188.09
11-05 6.42
11-06 337.99
11-07 343.2
11-08 495.3
11-09 213.23
11-10 494.99
11-11 276.17
11-12 242.44
11-13 310.63
11-14 360.4
11-15 466.4
11-16 36.23
11-17 398.5
11-18 275.59
11-19 431.5
11-20 604.81
11-21 249.5
11-22 155.37
11-23 218.96
11-24 180.89
11-25 346.99
11-26 719.67
11-27 348.6
11-28 334.02
11-29 12.76
11-30 543.83
12-01 769.0
12-02 4.4
12-03 6.63
12-04 97.97
12-05 130.7
12-06 213.77
12-07 351.02
12-08 254.21
12-09 319.14
12-10 623.0
12-11 218.74
12-12 201.54
12-13 53.1
12-14 8.69
12-15 79.54
12-16 28.66
12-17 162.39
12-18 187.02
12-19 646.33
12-20 270.54
12-21 424.87
12-22 238.37
12-23 72.23
12-24 597.05
12-25 884.44
12-26 643.33
12-27 671.89
12-28 530.98
12-29 91.08
12-30 497.26
12-31 487.25

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index