Alert archive / Florida / Red Flag Warnings in 2018
Red Flag Warning 9, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Mar 21, 2018, 2:58 AM EDT for Okeechobee County, Osceola County, Florida. It took effect at Mar 21, 2018, 12:00 PM EDT. It was in force for 7 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 21, 2018, 2:58 AM EDT (06:58 UTC)
- In effect from
- Mar 21, 2018, 12:00 PM EDT
- Expired
- Mar 21, 2018, 7:00 PM EDT
- In force
- 7 hr
- Issued by
- NWS Melbourne, FL
Counties Okeechobee County, FL, Osceola County, FL
The radar
The Melbourne radar (KMLB), 56 km from the middle of the area, began a volume at 06:55 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, 7.0 hours before the alert went out and 97 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
- 332 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1165 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 411 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 5.9
The text
As transmitted.
367 WWUS82 KMLB 210658 RFWMLB URGENT - FIRE WEATHER MESSAGE National Weather Service Melbourne FL 258 AM EDT Wed Mar 21 2018 FLZ047-053-054-058-059-064-147-212300- /O.NEW.KMLB.FW.W.0009.180321T1600Z-180321T2300Z/ Southern Brevard County-Osceola-Indian River-Okeechobee-St. Lucie- Martin-Northern Brevard County- 258 AM EDT Wed Mar 21 2018 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF EAST CENTRAL FLORIDA... The National Weather Service in Melbourne has issued a Red Flag Warning, which is in effect from noon today to 7 PM EDT this evening. * AFFECTED AREA... Southern Brevard County... Osceola... Indian River... Okeechobee... St. Lucie... Martin... Northern Brevard County. * WIND...Gusty West to Northwest winds of 15 to 25 mph can be expected by this afternoon. * HUMIDITY...Humidity will fall into the mid to upper 20s behind a passing cold front this afternoon. * IMPACTS...any fires that develop will likely 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 strong winds...low relative humidity...and dry environmental conditions can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 8:03 PM EDT | Special Weather Statement | MLB | Martin | 27 min |
| Mar 20, 8:13 PM EDT | Severe Thunderstorm Warning | MLB | Martin | 17 min |
| Mar 20, 8:17 PM EDT | Special Marine Warning | MLB | 58 min | |
| Mar 21, 2:53 AM EDT | Lake Wind Advisory | MLB | Lake, Orange, Osceola, Seminole, Volusia | 16 hr |
| Mar 21, 4:16 AM EDT | Small Craft Advisory | MLB | 42 hr |
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.