Alert archive / Florida / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 41, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 2, 2017, 8:14 PM EDT for Seminole County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 2, 2017, 8:14 PM EDT (00:14 UTC)
- Expired
- Jul 2, 2017, 8:45 PM EDT
- In force
- 31 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Seminole County, FL
The radar
The Melbourne radar (KMLB), 90 km from the middle of the area, began a volume at 00:16 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, 0.2 hours before the alert went out and 78 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
- 272 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1415 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
136
WUUS52 KMLB 030014
SVRMLB
FLC117-030045-
/O.NEW.KMLB.SV.W.0041.170703T0014Z-170703T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Melbourne FL
814 PM EDT SUN JUL 2 2017
The National Weather Service in Melbourne has issued a
* Severe Thunderstorm Warning for...
South central Seminole County in east central Florida...
* Until 845 PM EDT
* At 813 PM EDT, a severe thunderstorm was located over Lake Jessup,
moving southeast at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Sanford, Oviedo, Winter Springs, Casselberry and Lake Mary.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2875 8133 2881 8122 2880 8120 2879 8119
2861 8112 2861 8131
TIME...MOT...LOC 0013Z 332DEG 11KT 2872 8126
HAIL...0.75IN
WIND...60MPH
$$
Combs1 follow-up statement
749
WWUS52 KMLB 030040
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
840 PM EDT SUN JUL 2 2017
FLC117-030049-
/O.EXP.KMLB.SV.W.0041.000000T0000Z-170703T0045Z/
Seminole FL-
840 PM EDT SUN JUL 2 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SEMINOLE COUNTY
WILL EXPIRE AT 845 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire. However frequent
lightning and heavy rain are still possible with this thunderstorm.
LAT...LON 2875 8133 2881 8122 2880 8120 2879 8119
2861 8112 2861 8131
TIME...MOT...LOC 0039Z 332DEG 11KT 2866 8122
$$
CombsThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 8:03 PM EDT | Special Weather Statement | MLB | Seminole | 27 min |
| Jul 3, 2:53 PM EDT | Special Weather Statement | MLB | Volusia | 37 min |
| Jul 3, 3:02 PM EDT | Severe Thunderstorm Warning | MLB | Volusia | 28 min |
| Jul 3, 5:24 PM EDT | Special Weather Statement | MLB | Orange | 51 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2017Every severe thunderstorm warning in 2017
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.