Alert archive / Arkansas / Phillips County / Flash Flood Warnings

Flash Flood Warnings in Phillips County, Arkansas, 2009

23 flash flood warnings in 2009. An alert counts here when it covered this county. The archive of flash flood warnings reaches back to 1986.

Phillips County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Flash Flood Warnings
23
Busiest month
May9 flash flood warnings
Busiest day
May 2, 20094 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.

10 of 23 flash flood warnings covering Phillips County in 2009 had a flash flood report inside them; 3 of 4 flash flood reports fell inside a warning, on average 208 minutes after it went out.

Phillips County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Flash flood warnings231057%475%208 min

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: flash flood warnings23512646%20492%94 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
Feb 27, 10:18 PM CSTFlash Flood WarningMEG3 hr
Apr 2, 5:24 PM CDTFlash Flood WarningMEG3 hr
May 2, 9:22 AM CDTFlash Flood WarningMEG3 hr
May 2, 12:12 PM CDTFlash Flood WarningMEG3 hr
May 2, 3:12 PM CDTFlash Flood WarningMEG3 hr
May 2, 4:57 PM CDTFlash Flood WarningMEG6 hr
May 6, 1:27 AM CDTFlash Flood WarningMEG6 hr
May 9, 3:38 PM CDTFlash Flood WarningMEG3 hr
May 9, 5:27 PM CDTFlash Flood WarningMEG2 hr
May 10, 6:29 AM CDTFlash Flood WarningMEG6 hr
May 10, 8:25 AM CDTFlash Flood WarningMEG4 hr
Jul 21, 11:35 AM CDTFlash Flood WarningMEG6 hr
Jul 21, 1:13 PM CDTFlash Flood WarningMEG6 hr
Jul 30, 4:36 PM CDTFlash Flood WarningMEG114 min
Sep 15, 9:36 AM CDTFlash Flood WarningMEG3 hr
Sep 16, 2:45 PM CDTFlash Flood WarningMEG3 hr
Sep 16, 8:08 PM CDTFlash Flood WarningMEG2 hr
Sep 17, 2:37 PM CDTFlash Flood WarningMEG3 hr
Sep 18, 4:24 AM CDTFlash Flood WarningMEG3 hr
Sep 18, 6:00 AM CDTFlash Flood WarningMEG3 hr
Oct 30, 2:19 AM CDTFlash Flood WarningMEG12 hr
Dec 8, 2:30 PM CSTFlash Flood WarningMEG3 hr
Dec 24, 12:24 PM CSTFlash Flood WarningMEG4 hr

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 2, 20094flash flood warnings
  2. May 9, 20092flash flood warnings
  3. May 10, 20092flash flood warnings
  4. July 21, 20092flash flood warnings
  5. September 17, 20092flash flood warnings
  6. September 18, 20092flash flood warnings
  7. February 28, 20091flash flood warnings
  8. April 2, 20091flash flood warnings
  9. May 6, 20091flash flood warnings
  10. July 30, 20091flash flood warnings

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20082010

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.