Alert archive / Florida / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 2, NWS Key West, FL
NWS Key West, FL issued this severe thunderstorm warning at Oct 8, 2011, 4:07 AM EDT for Monroe County, Florida. It was in force for 26 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
- Oct 8, 2011, 4:07 AM EDT (08:07 UTC)
- Expired
- Oct 8, 2011, 4:33 AM EDT
- In force
- 26 min
- Issued by
- NWS Key West, FL
- Area
- Storm-based polygon
County Monroe County, FL
The radar
The Key West radar (KBYX), 72 km from the middle of the area, began a volume at 08:11 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
Key West, FL (KEYW), launched 00:00Z, 8.1 hours before the alert went out and 75 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
- 1573 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
854
WUUS52 KKEY 080807
SVRKEY
FLC087-080845-
/O.NEW.KKEY.SV.W.0002.111008T0807Z-111008T0845Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KEY WEST FL
407 AM EDT SAT OCT 8 2011
THE NATIONAL WEATHER SERVICE IN KEY WEST HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MIDDLE KEYS IN MONROE COUNTY IN FLORIDA...
THIS INCLUDES THE COMMUNITY OF MARATHON...
* UNTIL 445 AM EDT
* AT 402 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 8 MILES SOUTH OF DUCK KEY...OR
13 MILES EAST OF MARATHON...AND MOVING WEST AT 35 MPH.
* COMMUNITIES IN THE PATH OF THE SEVERE WEATHER INCLUDE GRASSY KEY...
BOOT KEY...KNIGHT KEY AND PIDGEON KEY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DAMAGING WINDS...DEADLY LIGHTNING...AND VERY HEAVY RAIN ARE LIKELY
WITH THIS STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM
PASSES.
PLEASE REPORT SEVERE WEATHER TO THE NEAREST LOCAL LAW ENFORCEMENT
AGENCY OR THE U.S. COAST GUARD...AND ASK THAT THEY RELAY THE REPORT
TO THE NATIONAL WEATHER SERVICE KEY WEST. YOU MAY ALSO CONTACT THE
NATIONAL WEATHER SERVICE DIRECTLY AT 3 0 5...2 9 5...1 3 1 6...
EXTENSION 3.
&&
LAT...LON 2480 8088 2476 8091 2476 8094 2471 8102
2472 8105 2471 8106 2468 8107 2468 8111
2471 8115 2472 8110 2475 8104 2474 8102
2478 8093 2480 8092
TIME...MOT...LOC 0807Z 103DEG 31KT 2467 8094
$$
MSB1 follow-up statement
746
WWUS52 KKEY 080833
SVSKEY
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KEY WEST FL
433 AM EDT SAT OCT 8 2011
FLC087-080840-
/O.CAN.KKEY.SV.W.0002.000000T0000Z-111008T0845Z/
MIDDLE KEYS IN MONROE FL-
433 AM EDT SAT OCT 8 2011
...THE SEVERE THUNDERSTORM WARNING FOR MIDDLE KEYS IN MONROE COUNTY
IS CANCELED...
LAT...LON 2480 8088 2476 8091 2476 8094 2471 8102
2472 8105 2471 8106 2468 8107 2468 8111
2471 8115 2472 8110 2475 8104 2474 8102
2478 8093 2480 8092
TIME...MOT...LOC 0830Z 103DEG 31KT 2471 8115
$$
MSBThe office that day
Everything else NWS Key West, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 3:04 AM EDT | Special Marine Warning | KEY | 86 min | |
| Oct 8, 3:29 AM EDT | Special Marine Warning | KEY | 61 min | |
| Oct 8, 3:38 AM EDT | Special Marine Warning | KEY | 52 min | |
| Oct 8, 4:21 AM EDT | Special Marine Warning | KEY | 33 min | |
| Oct 8, 10:23 AM EDT | Small Craft Advisory for Hazardous Seas | KEY | 5 hr | |
| Oct 8, 2:19 PM EDT | Special Marine Warning | KEY | 56 min | |
| Oct 8, 3:13 PM EDT | Special Marine Warning | KEY | 33 min | |
| Oct 8, 3:26 PM EDT | Areal Flood Advisory | KEY | Monroe | 4 hr |
| Oct 8, 4:17 PM EDT | Special Marine Warning | KEY | 58 min | |
| Oct 8, 4:43 PM EDT | Special Marine Warning | KEY | 62 min | |
| Oct 8, 5:40 PM EDT | Special Marine Warning | KEY | 20 min | |
| Oct 8, 6:18 PM EDT | Special Marine Warning | KEY | 57 min | |
| Oct 8, 7:24 PM EDT | Areal Flood Advisory | KEY | Monroe | 111 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011
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.