Overview Realtime Historical Map View
Extreme Heat Warning
2026-08-21T20:00:00-07:00

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 107 to 114 expected. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast California. * WHEN...From 10 AM MST /10 AM PDT/ Monday to 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.

Brock Reservoir Outlet Near Calexico Historical Data

Historical Data


Streamflow Range


Date Average 2026 2025 2024 2023 2022 2021 2020 2019
01-01 14.57
01-02 9.65
01-03 120.06
01-04 365.24
01-05 367.88
01-06 360.45
01-07 169.85
01-08 411.45
01-09 253.48
01-10 466.07
01-11 614.29
01-12 235.7
01-13 23.83
01-14 729.05
01-15 47.61
01-16 269.0
01-17 171.12
01-18 607.5
01-19 138.7
01-20 130.78
01-21 557.05
01-22 138.76
01-23 7.39
01-24 16.31
01-25 215.25
01-26 251.28
01-27 297.82
01-28 159.95
01-29 235.43
01-30 41.79
01-31 143.06
02-01 423.89
02-02 132.32
02-03 172.19
02-04 451.0
02-05 330.98
02-06 146.15
02-07 170.38
02-08 4.75
02-09 334.79
02-10 204.65
02-11 324.87
02-12 426.01
02-13 214.92
02-14 134.39
02-15 183.97
02-16 343.1
02-17 243.6
02-18 264.15
02-19 154.94
02-20 80.32
02-21 205.42
02-22 285.33
02-23 258.74
02-24 454.17
02-25 479.67
02-26 277.07
02-27 152.97
02-28 33.63
02-29 15.8
03-01 48.37
03-02 28.11
03-03 167.26
03-04 81.0
03-05 20.04
03-06 16.18
03-07 10.61
03-08 327.18
03-09 125.78
03-10 277.77
03-11 176.8
03-12 144.5
03-13 304.4
03-14 293.6
03-15 70.16
03-16 34.8
03-17 135.51
03-18 137.49
03-19 247.63
03-20 200.23
03-21 229.52
03-22 191.03
03-23 401.4
03-24 130.9
03-25 358.0
03-26 267.14
03-27 370.16
03-28 164.62
03-29 230.28
03-30 12.52
03-31 160.25
04-01 133.64
04-02 129.11
04-03 302.51
04-04 257.82
04-05 140.63
04-06 29.0
04-07 264.34
04-08 408.52
04-09 185.42
04-10 396.25
04-11 552.86
04-12 595.3
04-13 444.87
04-14 158.6
04-15 429.38
04-16 401.63
04-17 251.75
04-18 16.63
04-19 178.03
04-20 250.55
04-21 197.1
04-22 244.7
04-23 449.19
04-24 389.12
04-25 511.12
04-26 626.8
04-27 592.72
04-28 48.33
04-29 254.0
04-30 67.81
05-01 7.71
05-02 37.25
05-03 60.72
05-04 379.01
05-05 236.8
05-06 54.43
05-07 149.57
05-08 613.65
05-09 383.72
05-10 236.3
05-11 448.88
05-12 827.25
05-13 242.02
05-14 193.72
05-15 305.2
05-16 149.44
05-17 202.41
05-18 224.22
05-19 213.82
05-20 134.88
05-21 541.5
05-22 43.73
05-23 7.65
05-24 8.59
05-25 160.64
05-26 270.6
05-27 441.1
05-28 255.72
05-29 74.6
05-30 244.78
05-31 64.91
06-01 297.72
06-02 336.0
06-03 11.3
06-04 316.95
06-05 175.43
06-06 172.59
06-07 53.8
06-08 157.05
06-09 160.45
06-10 220.47
06-11 205.18
06-12 229.78
06-13 251.93
06-14 336.13
06-15 177.72
06-16 92.9
06-17 11.0
06-18 28.45
06-19 388.25
06-20 437.4
06-21 340.23
06-22 592.0
06-23 458.12
06-24 426.56
06-25 125.75
06-26 8.18
06-27 12.46
06-28 110.6
06-29 323.86
06-30 225.95
07-01 100.17
07-02 311.85
07-03 193.74
07-04 175.44
07-05 94.42
07-06 10.8
07-07 277.88
07-08 207.2
07-09 300.72
07-10 454.3
07-11 658.55
07-12 301.4
07-13 64.0
07-14 147.45
07-15 98.93
07-16 209.27
07-17 49.48
07-18 248.0
07-19 296.9
07-20 81.15
07-21 214.23
07-22 141.9
07-23 283.11
07-24 521.15
07-25 416.98
07-26 17.11
07-27 26.45
07-28 31.48
07-29 10.36
07-30 163.06
07-31 188.25
08-01 105.07
08-02 184.32
08-03 12.86
08-04 479.98
08-05 524.77
08-06 560.25
08-07 264.08
08-08 273.35
08-09 196.44
08-10 161.77
08-11 423.33
08-12 392.48
08-13 205.52
08-14 522.55
08-15 595.99
08-16 395.46
08-17 217.4
08-18 173.79
08-19 106.62
08-20 216.8
08-21 158.74
08-22 26.7
08-23 568.5
08-24 221.6
08-25 11.36
08-26 257.86
08-27 182.19
08-28 229.57
08-29 91.22
08-30 136.08
08-31 616.5
09-01 313.27
09-02 130.9
09-03 15.39
09-04 28.3
09-05 158.93
09-06 277.39
09-07 136.33
09-08 490.45
09-09 266.82
09-10 322.63
09-11 250.3
09-12 245.21
09-13 146.5
09-14 302.58
09-15 338.98
09-16 198.02
09-17 455.48
09-18 229.59
09-19 273.85
09-20 109.88
09-21 95.14
09-22 260.05
09-23 306.8
09-24 272.4
09-25 9.09
09-26 305.39
09-27 227.7
09-28 13.72
09-29 113.94
10-01 225.15
10-02 370.55
10-03 503.5
10-04 420.6
10-05 15.0
10-06 40.53
10-07 15.6
10-08 408.07
10-09 40.03
10-10 163.14
10-11 438.8
10-12 187.38
10-13 63.92
10-14 136.21
10-15 146.5
10-16 18.08
10-17 133.13
10-18 93.58
10-19 159.68
10-20 284.66
10-21 162.97
10-22 237.55
10-23 165.3
10-24 74.67
10-25 115.55
10-26 10.18
10-27 26.1
10-28 153.11
10-29 234.67
10-30 176.55
10-31 416.0
11-01 63.38
11-02 260.13
11-03 17.13
11-04 57.54
11-05 243.8
11-06 391.5
11-07 147.22
11-08 227.7
11-09 10.09
11-10 6.71
11-11 84.16
11-12 386.0
11-13 206.0
11-14 13.19
11-15 457.55
11-16 136.25
11-17 130.07
11-18 10.0
11-19 15.06
11-20 743.0
11-21 326.5
11-22 547.4
11-23 117.01
11-24 17.76
11-25 86.84
11-26 119.3
11-27 15.95
11-28 212.7
11-29 11.34
11-30 355.9
12-01 109.97
12-02 478.3
12-03 184.32
12-04 163.55
12-05 260.0
12-06 320.83
12-07 794.0
12-08 132.41
12-09 202.69
12-10 117.87
12-11 19.33
12-12 14.47
12-13 380.21
12-14 141.25
12-15 135.63
12-16 157.73
12-17 381.32
12-18 394.78
12-19 245.88
12-20 99.4
12-21 118.46
12-22 309.68
12-23 528.0
12-24 13.06
12-25 24.45
12-26 21.52
12-27 120.6
12-28 203.62
12-29 184.45
12-30 4.86
12-31 9.59

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index