Alert archive / Florida / Special Weather Statements in 2011
Special Weather Statement, NWS Jacksonville, FL
NWS Jacksonville, FL issued this special weather statement at Aug 9, 2011, 12:46 PM EDT for Saint Johns County, Florida. It was in force for 29 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
- Aug 9, 2011, 12:46 PM EDT (16:46 UTC)
- Expired
- Aug 9, 2011, 1:15 PM EDT
- In force
- 29 min
- Issued by
- NWS Jacksonville, FL
County Saint Johns County, FL
The radar
The Jacksonville radar (KJAX), 87 km from the middle of the area, began a volume at 16:46 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
Jacksonville, FL (KJAX), launched 12:00Z, 4.8 hours before the alert went out and 88 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
- 640 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this special weather statement went out at Aug 9, 9:50 AM EDT, 2 hours 56 minutes earlier.
Area forecast discussion, Aug 9, 9:50 AM EDT, 2 hours 56 minutes before
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</html>Hazardous weather outlook, Aug 9, 11:20 AM EDT, 1 hour 26 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE JACKSONVILLE FL 1120 AM EDT TUE AUG 9 2011 FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-101000- ALACHUA-APPLING-ATKINSON-BACON-BAKER-BRADFORD-BRANTLEY- CAMDEN (COASTAL)-CAMDEN (INLAND)-CHARLTON-CLAY-CLINCH-COFFEE- COLUMBIA-DUVAL-ECHOLS-FLAGLER-GILCHRIST-GLYNN (COASTAL)- GLYNN (INLAND)-HAMILTON-JEFF DAVIS-MARION-NASSAU-PIERCE-PUTNAM- ST JOHNS-SUWANNEE-UNION-WARE-WAYNE- 1120 AM EDT TUE AUG 9 2011 THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA. ...HEAT ADVISORY IN EFFECT ACROSS SOUTHEAST GEORGIA... ...STRONG THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING... .DAY ONE...TODAY AND TONIGHT... DANGEROUS HEAT INDICES WILL TOP OUT AROUND 110 DEGREES ACROSS SOUTHEAST GEORGIA AND A HEAT ADVISORY IS IN EFFECT. HEAT INDICES WILL TOP OUT IN THE 105 TO 110 RANGE ACROSS NORTHEAST FLORIDA. PLEASE REFER TO THE URGENT WEATHER MESSAGE FOR MORE DETAILS. SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED TODAY. STRONG GUSTY WINDS...EXCESSIVE LIGHTNING AND LOCALLY HEAVY RAINFALL IS EXPECTED WITH THIS ACTIVITY THIS AFTERNOON AND EVENING. ISOLATED STRONG AND SEVERE STORMS ARE POSSIBLE...MAINLY ACROSS SOUTHEAST GEORGIA. STORM MOTION WILL BE TO THE EAST AROUND 15 TO 20 MPH. MARINERS SHOULD BE ON THE LOOKOUT FOR THUNDERSTORMS MOVING OFFSHORE AFTER 1 PM...WHICH MAY PRODUCE WINDS OF 35 KNOTS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... DANGEROUS HEAT IS FORECAST THROUGH THE END OF THE WEEK WITH HEAT INDICES ABOVE 105 EACH AFTERNOON. NEAR RECORD HIGH TEMPERATURES ARE EXPECTED ON THURSDAY AND FRIDAY. SCATTERED THUNDERSTORMS WILL OCCUR EACH AFTERNOON AND EVENING... THOUGH ONLY ISOLATED THUNDERSTORMS ARE EXPECTED ON THURSDAY. ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR THEIR AREA. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.
In the hours before
Special weather statement, Aug 9, 10:32 AM EDT, 2 hours 14 minutes before
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</html>Local storm report, Aug 9, 11:56 AM EDT, 50 minutes before
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</html>Special weather statement, Aug 9, 12:46 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1246 PM EDT TUE AUG 9 2011
FLZ033-091715-
ST. JOHNS-
1246 PM EDT TUE AUG 9 2011
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHERN ST.
JOHNS COUNTY FOR STRONG WINDS AND EXCESSIVE LIGHTNING VALID UNTIL 115
PM EDT...
AT 1246 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 3 MILES NORTH OF SPUDS...OR 5 MILES
NORTH OF HASTINGS...MOVING EAST AT 25 MPH. THIS STRONG THUNDERSTORM
WILL ALSO AFFECT AREAS AROUND SPUDS...HASTINGS...ELKTON...SAINT
AUGUSTINE SOUTH...DUPONT CENTER...SAINT AUGUSTINE SHORES...VILANO
BEACH...SAINT AUGUSTINE...ANASTASIA AND BUTLER BEACH THROUGH 115 PM
EDT. EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55
MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 2967 8123 2968 8152 2976 8152 2977 8154
2987 8155 2996 8130 2982 8125 2980 8125
2979 8124 2976 8124 2968 8120
TIME...MOT...LOC 1646Z 268DEG 20KT 2978 8145
TRABERTThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 10:32 AM EDT | Special Weather Statement | JAX | Marion | 43 min |
| Aug 9, 1:38 PM EDT | Special Weather Statement | JAX | Columbia | 37 min |
| Aug 9, 3:02 PM EDT | Areal Flood Advisory | JAX | Duval, Saint Johns | 87 min |
| Aug 9, 3:09 PM EDT | Special Marine Warning | JAX | 66 min | |
| Aug 9, 3:39 PM EDT | Areal Flood Advisory | JAX | Duval | 51 min |
| Aug 9, 4:17 PM EDT | Special Weather Statement | JAX | Nassau | 43 min |
| Aug 9, 4:25 PM EDT | Areal Flood Advisory | JAX | Nassau | 52 min |
| Aug 8, 8:59 PM EDT | Special Weather Statement | JAX | Jeff Davis | 46 min |
| Aug 9, 2:50 AM EDT | Heat Advisory | JAX | Appling, Atkinson, Bacon, Brantley, Camden, Clinch and 6 more | 17 hr |
| Aug 9, 3:05 PM EDT | Special Weather Statement | JAX | Atkinson | 40 min |
| Aug 9, 3:11 PM EDT | Special Weather Statement | JAX | Charlton | 49 min |
| Aug 9, 3:42 PM EDT | Special Weather Statement | JAX | Charlton | 48 min |
| Aug 9, 4:35 PM EDT | Special Weather Statement | JAX | Brantley | 40 min |
| Aug 9, 5:15 PM EDT | Special Weather Statement | JAX | Clinch | 45 min |
| Aug 9, 5:22 PM EDT | Special Weather Statement | JAX | Berrien | 38 min |
| Aug 9, 5:30 PM EDT | Areal Flood Advisory | JAX | Clinch, Ware | 60 min |
| Aug 9, 5:48 PM EDT | Special Weather Statement | JAX | Wayne | 42 min |
| Aug 9, 5:51 PM EDT | Special Weather Statement | JAX | Clinch | 39 min |
| Aug 9, 5:54 PM EDT | Areal Flood Advisory | JAX | Atkinson, Coffee | 66 min |
| Aug 9, 5:57 PM EDT | Special Weather Statement | JAX | Jeff Davis | 48 min |
| Aug 9, 6:02 PM EDT | Severe Thunderstorm Warning | JAX | Coffee, Jeff Davis | 26 min |
| Aug 9, 6:11 PM EDT | Special Weather Statement | JAX | Jeff Davis | 49 min |
| Aug 9, 6:15 PM EDT | Areal Flood Advisory | JAX | Appling, Bacon, Coffee, Jeff Davis | 58 min |
| Aug 9, 6:20 PM EDT | Severe Thunderstorm Warning | JAX | Appling, Bacon, Coffee, Jeff Davis | 40 min |
| Aug 9, 6:22 PM EDT | Special Weather Statement | JAX | Appling | 53 min |
| Aug 9, 6:26 PM EDT | Severe Thunderstorm Warning | JAX | Appling, Jeff Davis, Wayne | 49 min |
| Aug 9, 6:46 PM EDT | Special Weather Statement | JAX | Ware | 44 min |
| Aug 9, 6:54 PM EDT | Special Weather Statement | JAX | Bacon | 51 min |
| Aug 9, 6:56 PM EDT | Severe Thunderstorm Warning | JAX | Bacon, Coffee, Pierce, Ware | 35 min |
| Aug 9, 7:02 PM EDT | Special Weather Statement | JAX | Appling, Wayne | 43 min |
| Aug 9, 7:04 PM EDT | Special Weather Statement | JAX | Atkinson | 56 min |
| Aug 9, 7:16 PM EDT | Areal Flood Advisory | JAX | Atkinson, Bacon, Clinch, Coffee, Ware | 84 min |
| Aug 9, 7:30 PM EDT | Special Weather Statement | JAX | Coffee | 45 min |
| Aug 9, 7:36 PM EDT | Special Weather Statement | JAX | Lanier | 39 min |
Nearby
Special Weather Statements in Florida, 2011Every special weather statement 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.