Alert archive / Florida / Red Flag Warnings in 2018
Red Flag Warning 6, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Mar 15, 2018, 3:40 AM EDT for 4 counties in Florida. It took effect at Mar 15, 2018, 12:00 PM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 15, 2018, 3:40 AM EDT (07:40 UTC)
- In effect from
- Mar 15, 2018, 12:00 PM EDT
- Expired
- Mar 15, 2018, 8:00 PM EDT
- In force
- 8 hr
- Issued by
- NWS Melbourne, FL
Counties Orange County, FL, Osceola County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 76 km from the middle of the area, began a volume at 07:41 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 00:00Z, 7.7 hours before the alert went out and 71 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2134 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
063 WWUS82 KMLB 150740 RFWMLB URGENT - FIRE WEATHER MESSAGE National Weather Service Melbourne FL 340 AM EDT Thu Mar 15 2018 ...Very dry air and dry vegetation will again contribute to a high fire danger... FLZ041-045>047-053-054-141-147-160000- /O.NEW.KMLB.FW.W.0006.180315T1600Z-180316T0000Z/ Inland Volusia County-Orange-Seminole-Southern Brevard County- Osceola-Indian River-Coastal Volusia County- Northern Brevard County- 340 AM EDT Thu Mar 15 2018 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT THIS EVENING FOR LONG DURATION OF LOW RELATIVE HUMIDITY AND DRY VEGETATION WITH HIGH ENERGY RELEASE COMPONENT VALUES... The National Weather Service in Melbourne has issued a Red Flag Warning, which is in effect from noon today to 8 PM EDT this evening. * AFFECTED AREA... Inland Volusia County... Orange... Seminole... Southern Brevard County... Osceola... Indian River... Coastal Volusia County... Northern Brevard County. * HUMIDITY...Min Humidity 15 to 20 percent this afternoon. * IMPACTS...any fires that develop could spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of low relative humidity...dry vegetation and warming temperatures can contribute to extreme fire behavior. && $$ Sedlock
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Melbourne, FL wrote its last area forecast discussion before this red flag warning went out at Mar 14, 9:20 PM EDT, 6 hours 20 minutes earlier.
Area forecast discussion, Mar 14, 9:20 PM EDT, 6 hours 20 minutes before
East Central Florida Forecast Discussion National Weather Service Melbourne FL 920 PM EDT Wed Mar 14 2018 .DISCUSSION... Cold high pressure has settled over the state and mid 30s along with possibility of patchy frost are forecast once again for coldest northern locations for the first time in awhile. U30s are forecast as well over a larger inland coverage southward to Okeechobee county with optimal cooling. Higher dewpoint readings ascd with earlier onshore sea breeze have manifest along the immediate Space/Treasure Coasts and expected overnight readings along the immediate coast in these areas will be adjusted upward to around 40 degrees or higher the remainder of the night. The afternoon sea breeze made progress to inland locations by sunset, however it was quite dry for the whole area this afternoon with a few brush fires cropping up in the dry afternoon conditions. A repeat is expected again on Thursday with very low humidity once again. ...prev disc... The main forecast problem is frost potential in the pre-dawn hours. MOS shows a rather large temperature/dew point spread then, but that guidance is for wide open airports. Noticed that a few wind protected spots around the Ocala National Forest had much lower dew point depressions this morning, and boundary layer winds will be lighter Thu morning. Therefore, have included mention of patchy frost for north Lake and interior Volusia counties where min temps in the mid-upper 30s are forecast. && .AVIATION...VFR. && .MARINE...Winds should drop off to 10-15 knots. Seas should continue near 6 feet in the Gulf Stream, so will retain an exercise caution statement there. A high pressure ridge will build across the peninsula from the Gulf of Mexico on Thu, diminishing winds below 10 knots with seas subsiding to 3-4 feet. && .FIRE WEATHER... Thu...A high pressure ridge will build across the area from the Gulf of Mexico. This will diminish winds below 10 mph, but very low RH will occur in the afternoon, with some interior spots likely having minimum values 15-20 percent. Coastal sections will have a sea breeze develop, but the very dry air mass will still allow for some duration of RH below 35 percent there too. ERC values in the Upper 30s and higher in some spots will likely require issuance of a Warning for a portion of the region early on Thursday. && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None AM...None. && JP/JS
Hazardous weather outlook, Mar 14, 8:26 PM EDT, 7 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Melbourne FL 826 PM EDT Wed Mar 14 2018 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-151230- Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia- Brevard County Line to Sebastian Inlet 0-20 nm- Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia- Brevard County Line 20-60 nm-Volusia- Brevard County Line to Sebastian Inlet 20-60 nm- Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County- Northern Lake County-Orange-Seminole-Southern Brevard County- Osceola-Indian River-Okeechobee-St. Lucie-Martin- Coastal Volusia County-Southern Lake County- Northern Brevard County- 826 PM EDT Wed Mar 14 2018 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TONIGHT. .WIND AND SEA IMPACT... Winds will continue to diminish through tonight, but seas will remain elevated near 6 feet in the Gulf Stream waters. Small craft should exercise caution if in the offshore waters. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. Rainfall forecast remains near zero until late into the weekend, therefore fire weather concerns will continue. Critically low relative humidity tomorrow will contribute to additional vegetative drying and a Very High fire weather risk. A northeast swell across the local marine waters will promote an elevated rip current threat at area beaches through late week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. Smith
Nearby
Red Flag Warnings in Florida, 2018Every red flag warning in 2018
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.