Alert archive / Florida / Flood Watches in 2021
Flood Watch 3, NWS Melbourne, FL
NWS Melbourne, FL issued this flood watch at Nov 4, 2021, 2:45 PM EDT for Volusia County, Florida. It took effect at Nov 5, 2021, 8:00 AM EDT. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Nov 4, 2021, 2:45 PM EDT (18:45 UTC)
- In effect from
- Nov 5, 2021, 8:00 AM EDT
- Expired
- Nov 6, 2021, 4:00 AM EDT
- In force
- 20 hr
- Issued by
- NWS Melbourne, FL
- Flood severity
- None
County Volusia County, FL
The radar
The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 18:48 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, 6.8 hours before the alert went out and 91 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
- 17 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- -30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
510 WGUS62 KMLB 041845 FFAMLB URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Melbourne FL 245 PM EDT Thu Nov 4 2021 .Periods of heavy showers and storms may produce locally heavy rainfall across portion of Brevard and Volusia counties beginning Friday morning and continuing into Friday night. Rainfall amounts of 3 to 4 inches are possible with locally higher amounts of up to 6 inches. FLZ041-047-141-147-060800- /O.NEW.KMLB.FA.A.0003.211105T1200Z-211106T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inland Volusia-Southern Brevard-Coastal Volusia-Northern Brevard- Including the cities of Cocoa, Deland, Rockledge, Deltona, Daytona Beach, Titusville, Melbourne, Palm Bay, New Smyrna Beach, Ormond Beach, and Debary 245 PM EDT Thu Nov 4 2021 ...FLOOD WATCH IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY NIGHT... * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of east central Florida, including the following areas, Coastal Volusia, Inland Volusia, Northern Brevard and Southern Brevard. * WHEN...From Friday morning through late Friday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ JC
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 4, 3:49 AM EDT | Coastal Flood Watch | MLB | Volusia | 12 hr |
| Nov 4, 10:24 AM EDT | River Flood Warning | MLB | Lake, Volusia | 14 days |
| Nov 4, 3:19 PM EDT | Coastal Flood Advisory | MLB | Volusia | 37 hr |
Nearby
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.