Alert archive / Florida / Areal Flood Advisories in 2021
Areal Flood Advisory 21, NWS Melbourne, FL
NWS Melbourne, FL issued this areal flood advisory at Jun 23, 2021, 5:42 PM EDT for Lake County, Orange County, Seminole County, Florida. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2021, 5:42 PM EDT (21:42 UTC)
- Expired
- Jun 23, 2021, 7:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
Counties Lake County, FL, Orange County, FL, Seminole County, FL
The radar
The Melbourne radar (KMLB), 107 km from the middle of the area, began a volume at 21:45 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.
The nearest sounding before it
Cape Canaveral, FL (KXMR), launched 12:00Z, 9.7 hours before the alert went out and 104 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
- 216 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 913 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
583
WGUS82 KMLB 232142
FLSMLB
Flood Advisory
National Weather Service Melbourne FL
542 PM EDT Wed Jun 23 2021
FLC069-095-117-232345-
/O.NEW.KMLB.FA.Y.0021.210623T2142Z-210623T2345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lake FL-Orange FL-Seminole FL-
542 PM EDT Wed Jun 23 2021
The National Weather Service in Melbourne has issued a
* Flood Advisory for...
Southern Lake County in east central Florida...
Western Orange County in east central Florida...
Western Seminole County in east central Florida...
* Until 745 PM EDT.
* At 542 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 2.5 inches of rain
have fallen. Additional storms with heavy rain are expected to
develop in the advisory area.
* Some locations that will experience flooding include...
Orlando, Sanford, Apopka, Altamonte Springs, Ocoee, Winter Garden,
Winter Springs, Winter Park, Casselberry, Maitland, Tavares, Lake
Mary, Longwood, Groveland, Mascotte, Windermere,
Howey-In-the-hills, Lake Apopka, Zellwood and Ferndale.
Additional rainfall amounts of 1 to 2 inches are expected over the
area, leading to totals up to around 4 inches in some locations.
This additional rain will result in minor flooding.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 2852 8194 2878 8195 2878 8147 2886 8137
2885 8136 2884 8132 2883 8129 2843 8124
2843 8147
$$The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 9:20 PM EDT | Special Marine Warning | MLB | 115 min | |
| Jun 23, 1:34 PM EDT | Special Weather Statement | MLB | Martin | 56 min |
| Jun 23, 1:46 PM EDT | Special Weather Statement | MLB | Martin | 44 min |
| Jun 23, 3:25 PM EDT | Special Weather Statement | MLB | Indian River, Martin, Okeechobee, Saint Lucie | 65 min |
| Jun 23, 3:42 PM EDT | Areal Flood Advisory | MLB | Okeechobee | 93 min |
| Jun 23, 3:57 PM EDT | Special Weather Statement | MLB | Osceola | 48 min |
| Jun 23, 5:00 PM EDT | Areal Flood Advisory | MLB | Brevard, Indian River, Osceola | 90 min |
| Jun 23, 7:45 PM EDT | Areal Flood Advisory | MLB | Lake, Orange, Seminole, Volusia | 90 min |
Nearby
Areal Flood Advisories in Florida, 2021Every areal flood advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.