Alert archive / Florida / Tornado Warnings in 2017
Tornado Warning 16, NWS Melbourne, FL
NWS Melbourne, FL issued this tornado warning at Jul 31, 2017, 8:57 PM EDT for Martin County, Florida. It was in force for 33 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 31, 2017, 8:57 PM EDT (00:57 UTC)
- Expired
- Jul 31, 2017, 9:30 PM EDT
- In force
- 33 min
- Issued by
- NWS Melbourne, FL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Martin County, FL
The radar
The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 00:58 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
Miami, FL (KMFL), launched 00:00Z, 1.0 hours before the alert went out and 143 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
- 579 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted.
843
WFUS52 KMLB 010057
TORMLB
FLC085-010130-
/O.NEW.KMLB.TO.W.0016.170801T0057Z-170801T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Melbourne FL
857 PM EDT MON JUL 31 2017
The National Weather Service in Melbourne has issued a
* Tornado Warning for...
Western Martin County in east central Florida...
* Until 930 PM EDT
* At 856 PM EDT, a severe thunderstorm capable of producing a tornado
was located near J And S Fish Camp, moving northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be north of...
Indiantown around 910 PM EDT.
Other locations impacted by this tornadic thunderstorm include Port
Mayaca.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 2700 8062 2708 8066 2711 8066 2712 8067
2721 8056 2721 8055 2714 8033 2696 8056
2696 8061
TIME...MOT...LOC 0056Z 232DEG 32KT 2705 8061
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Pendergrast2 follow-up statements
266
WWUS52 KMLB 010108
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
908 PM EDT MON JUL 31 2017
FLC085-010130-
/O.CON.KMLB.TO.W.0016.000000T0000Z-170801T0130Z/
Martin FL-
908 PM EDT MON JUL 31 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR WESTERN
MARTIN COUNTY...
At 905 PM EDT, a severe thunderstorm capable of producing a tornado
was over rural western Martin county just east of Lake Okeechobee
moving northeast at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
The storm will continue moving Northeast over Western Martin county
through 920 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to an interior room of a sturdy building. Avoid
windows. If you are outdoors, in a mobile home, or in a vehicle,
move to the closest substantial shelter and protect yourself from
flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 2700 8062 2708 8066 2711 8066 2712 8067
2721 8056 2721 8055 2714 8033 2696 8056
2696 8061
TIME...MOT...LOC 0105Z 232DEG 32KT 2710 8054
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Pendergrast406
WWUS52 KMLB 010125
SVSMLB
Severe Weather Statement
National Weather Service Melbourne FL
925 PM EDT MON JUL 31 2017
FLC085-010134-
/O.EXP.KMLB.TO.W.0016.000000T0000Z-170801T0130Z/
Martin FL-
925 PM EDT MON JUL 31 2017
...THE TORNADO WARNING FOR WESTERN MARTIN COUNTY WILL EXPIRE AT 930
PM EDT...
The thunderstorm which prompted the warning has weakened. Therefore,
the warning will be allowed to expire. However gusty winds are
still possible with this thunderstorm.
LAT...LON 2700 8062 2708 8066 2711 8066 2712 8067
2721 8056 2721 8055 2714 8033 2696 8056
2696 8061
TIME...MOT...LOC 0124Z 232DEG 32KT 2716 8045
$$
PendergrastThe office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 9:34 PM EDT | Tornado Warning | MLB | Martin, Saint Lucie | 26 min |
| Aug 1, 4:26 AM EDT | Rip Current Statement | MLB | Volusia | 15 hr |
| Aug 1, 6:42 PM EDT | Special Weather Statement | MLB | Volusia | 48 min |
| Aug 1, 7:26 PM EDT | Special Weather Statement | MLB | Volusia | 64 min |
Nearby
Tornado Warnings in Florida, 2017Every tornado warning in 2017Tornadoes 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.