Alert archive / Florida / Areal Flood Warnings in 2021
Areal Flood Warning 21, NWS Jacksonville, FL
NWS Jacksonville, FL issued this areal flood warning at Jun 24, 2021, 4:23 PM EDT for Alachua County, Bradford County, Florida. It was in force for 2 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 24, 2021, 4:23 PM EDT (20:23 UTC)
- Expired
- Jun 24, 2021, 6:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alachua County, FL, Bradford County, FL
The radar
The Jacksonville radar (KJAX), 101 km from the middle of the area, began a volume at 20:26 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 5:01 PM EDT | HEAVY RAIN 4.2 | 5 Se Alachua, FL | MESONET STATION EW3527 GAINESVILLE IN ALACHUA, FL MEASURED 4.20 INCHES OF RAINFALL OVER THE PAST 6 HOURS. |
| Jun 24, 5:15 PM EDT | HEAVY RAIN 4.15 | 4 W Gainesville, FL | A PUBLIC WEATHER STATION IN THE WEST PARK AREA OF GAINESVILLE MEASURED 4.15 INCHES OF RAINFALL AS OF 515 PM. |
| Jun 24, 5:15 PM EDT | HEAVY RAIN 4.23 | 5 Se Alachua, FL | A PUBLIC WEATHER STATION JUST NORTH OF CHANTILLY ACRES AND EAST OF SAN FELASCO HAMMOCK PRESERVE MEASURED STORM TOTAL RAINFALL OF 4.23 INCHES AS OF 515 PM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 8.4 hours before the alert went out and 102 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.
- Mixed-layer CAPE
- 1889 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
438
WGUS42 KJAX 242023
FLWJAX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Jacksonville FL
423 PM EDT Thu Jun 24 2021
FLC001-007-242230-
/O.NEW.KJAX.FA.W.0021.210624T2023Z-210624T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alachua FL-Bradford FL-
423 PM EDT Thu Jun 24 2021
The National Weather Service in Jacksonville has issued a
* Flood Warning for...
Central Alachua County in northern Florida...
Central Bradford County in northern Florida...
* Until 630 PM EDT.
* At 423 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Flooding is ongoing or expected to begin shortly in
the warned area. Between 1.5 and 2.5 inches of rain have fallen.
* Some locations that will experience flooding include...
Gainesville, Starke, Alachua, Gainesville Airport, University Of
Florida, Newnans Lake, Orange Heights, Sampson, Waldo, Hampton, La
Crosse and Brooker.
Additional rainfall amounts of 1 to 3 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 2991 8238 2995 8212 2967 8211 2957 8264
2971 8258 2980 8243
$$
NELSON2 follow-up statements
901
WGUS82 KJAX 242103
FLSJAX
Flood Statement
National Weather Service Jacksonville FL
503 PM EDT Thu Jun 24 2021
FLC007-242113-
/O.CAN.KJAX.FA.W.0021.000000T0000Z-210624T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bradford FL-
503 PM EDT Thu Jun 24 2021
...FLOOD WARNING IS CANCELLED FOR CENTRAL BRADFORD COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 2985 8238 2982 8214 2967 8211 2957 8264
2971 8258 2980 8243
$$
FLC001-242230-
/O.CON.KJAX.FA.W.0021.000000T0000Z-210624T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alachua FL-
503 PM EDT Thu Jun 24 2021
...FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT THIS EVENING FOR
CENTRAL ALACHUA COUNTY...
At 503 PM EDT, Doppler radar indicated slow moving thunderstorms
with very heavy rainfall across the warned area. Between 1.5 and 2.5
inches of rain have fallen.
Some locations that will experience flooding include...
Gainesville, Alachua, University Of Florida, Gainesville Airport,
Newnans Lake, Orange Heights and Waldo.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 2985 8238 2982 8214 2967 8211 2957 8264
2971 8258 2980 8243
$$
NELSON586
WGUS82 KJAX 242224
FLSJAX
Flood Statement
National Weather Service Jacksonville FL
624 PM EDT Thu Jun 24 2021
FLC001-242234-
/O.EXP.KJAX.FA.W.0021.000000T0000Z-210624T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alachua FL-
624 PM EDT Thu Jun 24 2021
...FLOOD WARNING WILL EXPIRE AT 630 PM EDT THIS EVENING FOR CENTRAL
ALACHUA COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 2985 8238 2982 8214 2967 8211 2957 8264
2971 8258 2980 8243
$$
NELSONThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 12:23 PM EDT | Special Weather Statement | JAX | Hamilton | 82 min |
| Jun 24, 12:55 PM EDT | Special Weather Statement | JAX | Hamilton | 50 min |
| Jun 24, 1:29 PM EDT | Special Weather Statement | JAX | Columbia | 46 min |
| Jun 24, 1:47 PM EDT | Special Weather Statement | JAX | Hamilton | 58 min |
| Jun 24, 1:57 PM EDT | Areal Flood Warning | JAX | Columbia, Hamilton | 2 hr |
| Jun 24, 2:17 PM EDT | Special Weather Statement | JAX | Putnam | 28 min |
| Jun 24, 2:19 PM EDT | Special Weather Statement | JAX | Union | 41 min |
| Jun 24, 2:21 PM EDT | Special Weather Statement | JAX | Baker | 39 min |
| Jun 24, 3:03 PM EDT | Special Weather Statement | JAX | Alachua, Columbia, Union | 42 min |
| Jun 24, 3:06 PM EDT | Areal Flood Warning | JAX | Baker, Columbia, Duval, Nassau | 114 min |
| Jun 24, 3:11 PM EDT | Special Weather Statement | JAX | Clay | 49 min |
| Jun 24, 3:44 PM EDT | Special Weather Statement | JAX | Alachua, Bradford, Gilchrist | 46 min |
| Jun 24, 4:01 PM EDT | Special Weather Statement | JAX | Clay | 44 min |
| Jun 24, 4:13 PM EDT | Special Weather Statement | JAX | Flagler | 62 min |
| Jun 24, 4:29 PM EDT | Special Weather Statement | JAX | Marion | 31 min |
| Jun 24, 4:32 PM EDT | Special Weather Statement | JAX | Alachua | 43 min |
| Jun 24, 4:35 PM EDT | Special Weather Statement | JAX | Flagler | 40 min |
| Jun 24, 4:40 PM EDT | Special Weather Statement | JAX | Clay | 65 min |
| Jun 24, 4:59 PM EDT | Special Weather Statement | JAX | Putnam | 46 min |
| Jun 24, 5:15 PM EDT | Special Weather Statement | JAX | Flagler, Putnam | 45 min |
| Jun 24, 5:41 PM EDT | Special Weather Statement | JAX | Duval | 49 min |
| Jun 24, 5:56 PM EDT | Special Weather Statement | JAX | Putnam | 64 min |
| Jun 24, 6:54 PM EDT | Small Craft Advisory | JAX | 8 hr |
Nearby
Areal Flood Warnings in Florida, 2021Every areal flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.