Alert archive / Florida / Flash Flood Warnings in 2022

Flash Flood Warning 1, NWS Jacksonville, FL

May 21, 2022Duval County, Florida

NWS Jacksonville, FL issued this flash flood warning at May 21, 2022, 5:42 PM EDT for Duval County, Florida. It was in force for 80 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 21, 2022, 5:42 PM EDT (21:42 UTC)
Expired: May 21, 2022, 7:02 PM EDT
In force: 80 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Flood severity: None

County Duval County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.7 hours before the alert went out and 235 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 501 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1237 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 211 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jacksonville, FL wrote its last area forecast discussion before this flash flood warning went out at May 21, 3:36 PM EDT, 2 hours 6 minutes earlier.

Area forecast discussion, May 21, 3:36 PM EDT, 2 hours 6 minutes before

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In the hours before

Local storm report, May 21, 5:29 PM EDT, 13 minutes before

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Special weather statement, May 21, 5:33 PM EDT, 9 minutes before

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Special weather statement, May 21, 5:35 PM EDT, 7 minutes before

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Local storm report, May 21, 5:36 PM EDT, 6 minutes before

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Special weather statement, May 21, 5:38 PM EDT, 4 minutes before

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Local storm report, May 21, 5:39 PM EDT, 3 minutes before

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The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 20, 9:14 PM EDT	Special Weather Statement	JAX	Marion	31 min
May 21, 12:48 PM EDT	Special Weather Statement	JAX	Hamilton	42 min
May 21, 2:32 PM EDT	Special Weather Statement	JAX	Flagler	28 min
May 21, 2:52 PM EDT	Special Weather Statement	JAX	Marion	23 min
May 21, 3:23 PM EDT	Special Weather Statement	JAX	Marion	52 min
May 21, 3:45 PM EDT	Special Weather Statement	JAX	Columbia	30 min
May 21, 3:50 PM EDT	Special Marine Warning	JAX		55 min
May 21, 3:54 PM EDT	Special Weather Statement	JAX	Marion	36 min
May 21, 3:56 PM EDT	Special Weather Statement	JAX	Flagler	34 min
May 21, 4:02 PM EDT	Special Weather Statement	JAX	Alachua	43 min
May 21, 4:12 PM EDT	Special Weather Statement	JAX	Duval	33 min
May 21, 4:14 PM EDT	Special Weather Statement	JAX	Columbia	31 min
May 21, 4:16 PM EDT	Special Weather Statement	JAX	Marion	29 min
May 21, 4:24 PM EDT	Special Weather Statement	JAX	Duval	36 min
May 21, 4:27 PM EDT	Special Weather Statement	JAX	Nassau	33 min
May 21, 4:38 PM EDT	Special Weather Statement	JAX	Alachua, Bradford	37 min
May 21, 4:39 PM EDT	Special Weather Statement	JAX	Saint Johns	36 min
May 21, 4:44 PM EDT	Special Weather Statement	JAX	Putnam	46 min
May 21, 4:46 PM EDT	Areal Flood Warning	JAX	Saint Johns	117 min
May 21, 4:50 PM EDT	Special Weather Statement	JAX	Nassau	40 min
May 21, 4:52 PM EDT	Special Weather Statement	JAX	Clay	23 min
May 21, 4:57 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	33 min
May 21, 5:02 PM EDT	Special Weather Statement	JAX	Alachua, Bradford, Clay, Saint Johns	43 min
May 21, 5:03 PM EDT	Special Weather Statement	JAX	Union	42 min
May 21, 5:05 PM EDT	Special Weather Statement	JAX	Columbia	40 min
May 21, 5:15 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval, Saint Johns	30 min
May 21, 5:19 PM EDT	Areal Flood Warning	JAX	Duval, Nassau	50 min
May 21, 5:23 PM EDT	Areal Flood Warning	JAX	Clay	70 min
May 21, 5:29 PM EDT	Special Weather Statement	JAX	Marion	31 min
May 21, 5:33 PM EDT	Special Weather Statement	JAX	Hamilton	27 min
May 21, 5:35 PM EDT	Special Weather Statement	JAX	Baker	40 min
May 21, 5:38 PM EDT	Special Weather Statement	JAX	Saint Johns	52 min
May 21, 5:42 PM EDT	Special Marine Warning	JAX		63 min
May 21, 5:44 PM EDT	Special Weather Statement	JAX	Duval	31 min
May 21, 5:46 PM EDT	Special Weather Statement	JAX	Columbia, Union	29 min
May 21, 5:59 PM EDT	Areal Flood Warning	JAX	Saint Johns	45 min
May 21, 6:10 PM EDT	Severe Thunderstorm Warning	JAX	Hamilton, Suwannee	35 min
May 21, 6:16 PM EDT	Special Weather Statement	JAX	Duval, Nassau	44 min
May 21, 6:19 PM EDT	Special Weather Statement	JAX	Saint Johns	41 min
May 21, 6:37 PM EDT	Special Marine Warning	JAX		68 min
May 21, 6:47 PM EDT	Special Weather Statement	JAX	Flagler	43 min
May 21, 7:04 PM EDT	Special Weather Statement	JAX	Flagler	41 min
May 21, 7:06 PM EDT	Special Weather Statement	JAX	Marion	24 min
May 21, 7:11 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	36 min
May 21, 7:26 PM EDT	Special Weather Statement	JAX	Saint Johns	19 min
May 21, 7:33 PM EDT	Special Weather Statement	JAX	Marion	42 min
May 21, 7:56 PM EDT	Special Weather Statement	JAX	Flagler	34 min
May 20, 8:27 PM EDT	Special Weather Statement	JAX	Brantley, Charlton	48 min
May 20, 9:21 PM EDT	Special Weather Statement	JAX	Appling	24 min
May 20, 9:45 PM EDT	Special Weather Statement	JAX	Appling	45 min
May 21, 12:19 PM EDT	Special Weather Statement	JAX	Charlton	26 min
May 21, 1:18 PM EDT	Special Weather Statement	JAX	Brantley, Glynn	42 min
May 21, 1:26 PM EDT	Special Weather Statement	JAX	Clinch	49 min
May 21, 1:56 PM EDT	Special Weather Statement	JAX	Wayne	34 min
May 21, 2:12 PM EDT	Special Weather Statement	JAX	Appling	33 min
May 21, 2:18 PM EDT	Special Weather Statement	JAX	Ware	27 min
May 21, 2:24 PM EDT	Special Weather Statement	JAX	Ware	36 min
May 21, 2:29 PM EDT	Special Weather Statement	JAX	Charlton	46 min
May 21, 2:35 PM EDT	Special Weather Statement	JAX	Wayne	25 min
May 21, 2:48 PM EDT	Special Weather Statement	JAX	Echols	27 min
May 21, 2:55 PM EDT	Special Weather Statement	JAX	Camden	35 min
May 21, 2:56 PM EDT	Special Weather Statement	JAX	Pierce	34 min
May 21, 3:02 PM EDT	Special Weather Statement	JAX	Appling	43 min
May 21, 3:11 PM EDT	Special Weather Statement	JAX	Charlton	49 min
May 21, 3:21 PM EDT	Special Weather Statement	JAX	Brantley	39 min
May 21, 3:34 PM EDT	Special Weather Statement	JAX	Charlton	26 min
May 21, 3:40 PM EDT	Special Weather Statement	JAX	Lanier	50 min
May 21, 4:32 PM EDT	Special Weather Statement	JAX	Ware	28 min
May 21, 4:46 PM EDT	Special Weather Statement	JAX	Echols	44 min

Nearby

Flash Flood Warnings in Florida, 2022 Every flash flood warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.