Alert archive / Texas / Hidalgo County / Flash Flood Warnings

Flash Flood Warnings in Hidalgo County, Texas, 2015

18 flash flood warnings in 2015. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.

Hidalgo County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Flash Flood Warnings
18
Busiest month
May7 flash flood warnings
Busiest day
May 12, 20153 flash flood warnings

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

9 of 18 flash flood warnings covering Hidalgo County in 2015 had a flash flood report inside them; 17 of 17 flash flood reports fell inside a warning, on average 97 minutes after it went out.

Hidalgo County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Flash flood warnings18950%17100%97 min

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Brownsville, TX: flash flood warnings603345%7692%67 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Apr 10, 7:42 PM CDTFlash Flood WarningBRO2 hr
Apr 12, 10:45 PM CDTFlash Flood WarningBRO3 hr
Apr 13, 1:43 AM CDTFlash Flood WarningBRO2 hr
May 11, 9:48 PM CDTFlash Flood WarningBRO3 hr
May 11, 11:48 PM CDTFlash Flood WarningBRO3 hr
May 12, 12:50 AM CDTFlash Flood WarningBRO115 min
May 15, 2:39 PM CDTFlash Flood WarningBRO111 min
May 15, 3:15 PM CDTFlash Flood WarningBRO2 hr
May 15, 4:48 PM CDTFlash Flood WarningBRO2 hr
May 30, 6:35 PM CDTFlash Flood WarningBRO115 min
Jun 17, 9:57 PM CDTFlash Flood WarningBRO2 hr
Jun 18, 12:31 AM CDTFlash Flood WarningBRO119 min
Jun 19, 5:49 PM CDTFlash Flood WarningBRO3 hr
Aug 20, 12:41 AM CDTFlash Flood WarningBRO2 hr
Aug 20, 2:06 AM CDTFlash Flood WarningBRO114 min
Aug 20, 5:52 AM CDTFlash Flood WarningBRO83 min
Oct 24, 1:31 PM CDTFlash Flood Warning EmergencyBRO5 hr
Oct 24, 3:03 PM CDTFlash Flood WarningBRO2 hr

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 12, 20153flash flood warnings
  2. May 15, 20153flash flood warnings
  3. August 20, 20153flash flood warnings
  4. April 13, 20152flash flood warnings
  5. June 18, 20152flash flood warnings
  6. October 24, 20152flash flood warnings
  7. April 11, 20151flash flood warnings
  8. May 30, 20151flash flood warnings
  9. June 19, 20151flash flood warnings

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20142016

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.