Alert archive / Florida / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 27, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 10, 2021, 2:18 PM EDT for Hamilton County, Suwannee County, Florida; Clinch County, Echols County, Georgia. It was in force for 42 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
- Apr 10, 2021, 2:18 PM EDT (18:18 UTC)
- Expired
- Apr 10, 2021, 3:00 PM EDT
- In force
- 42 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hamilton County, FL, Suwannee County, FL, Clinch County, GA, Echols County, GA
The radar
The Moody AFB radar (KVAX), 40 km from the middle of the area, began a volume at 18:22 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, 6.3 hours before the alert went out and 119 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
- 159 J/kg
- Mixed-layer CIN
- -225 J/kg
- Mixed-layer LCL
- 965 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
968
WUUS52 KJAX 101818
SVRJAX
FLC047-121-GAC065-101-101900-
/O.NEW.KJAX.SV.W.0027.210410T1818Z-210410T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
218 PM EDT Sat Apr 10 2021
The National Weather Service in Jacksonville has issued a
* Severe Thunderstorm Warning for...
Suwannee County in northern Florida...
Hamilton County in northern Florida...
Echols County in southeastern Georgia...
Central Clinch County in southeastern Georgia...
* Until 300 PM EDT.
* At 218 PM EDT, severe thunderstorms were located along a line
extending from near Mayday to near Dowling Park, moving east at 25
mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Live Oak, Jasper, Jennings, White Springs, Statenville, Suwannee
River State Park, Suwannee Springs, Mayday, Belmont and Crossroads.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3039 8317 3044 8322 3063 8319 3063 8314
3080 8313 3084 8309 3085 8301 3088 8297
3099 8259 3060 8266 3060 8270 3056 8273
3053 8273 3047 8268 3033 8271 3033 8272
3032 8280 3016 8280 3015 8324 3026 8325
TIME...MOT...LOC 1818Z 259DEG 23KT 3083 8306 3024 8319
HAIL...0.75IN
WIND...60MPH
$$
KB2 follow-up statements
985
WWUS52 KJAX 101837
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
237 PM EDT Sat Apr 10 2021
FLC047-121-GAC065-101-101900-
/O.CON.KJAX.SV.W.0027.000000T0000Z-210410T1900Z/
Suwannee FL-Hamilton FL-Echols GA-Clinch GA-
237 PM EDT Sat Apr 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTH CENTRAL SUWANNEE...CENTRAL HAMILTON...ECHOLS AND CENTRAL
CLINCH COUNTIES...
At 236 PM EDT, severe thunderstorms were located along a line
extending from near Mayday to near Live Oak, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Jasper, Statenville, Belmont, Mayday and Needmore.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3085 8301 3088 8297 3099 8259 3060 8266
3060 8270 3056 8273 3053 8273 3047 8268
3047 8270 3036 8310
TIME...MOT...LOC 1836Z 259DEG 23KT 3085 8294 3026 8307
HAIL...0.75IN
WIND...60MPH
$$
KB176
WWUS52 KJAX 101900 RRA
SVSJAX
Severe Weather Statement
National Weather Service Jacksonville FL
300 PM EDT Sat Apr 10 2021
FLC047-121-GAC065-101-101910-
/O.EXP.KJAX.SV.W.0027.000000T0000Z-210410T1900Z/
Suwannee FL-Hamilton FL-Echols GA-Clinch GA-
300 PM EDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SUWANNEE...
CENTRAL HAMILTON...ECHOLS AND CENTRAL CLINCH COUNTIES HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.
LAT...LON 3085 8301 3088 8297 3099 8259 3060 8266
3060 8270 3056 8273 3053 8273 3047 8268
3047 8270 3036 8310
TIME...MOT...LOC 1900Z 259DEG 23KT 3085 8294 3026 8307
$$
KBThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 2:30 AM EDT | Small Craft Advisory | JAX | 24 hr | |
| Apr 10, 2:33 AM EDT | Rip Current Statement | JAX | Duval, Flagler, Nassau | 17 hr |
| Apr 10, 1:41 PM EDT | Special Weather Statement | JAX | Hamilton, Suwannee | 64 min |
| Apr 10, 2:45 PM EDT | Special Weather Statement | JAX | Columbia, Hamilton, Suwannee | 60 min |
| Apr 10, 2:59 PM EDT | Severe Thunderstorm Warning | JAX | Columbia, Hamilton | 46 min |
| Apr 10, 3:34 PM EDT | Special Weather Statement | JAX | Alachua, Bradford, Marion, Union | 56 min |
| Apr 10, 3:34 PM EDT | Special Weather Statement | JAX | Baker | 56 min |
| Apr 10, 4:08 PM EDT | Special Weather Statement | JAX | Nassau | 67 min |
| Apr 10, 4:14 PM EDT | Special Marine Warning | JAX | 61 min | |
| Apr 10, 4:29 PM EDT | Special Weather Statement | JAX | Bradford, Clay, Duval, Putnam | 61 min |
| Apr 10, 4:44 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 34 min |
| Apr 10, 4:57 PM EDT | Special Weather Statement | JAX | Duval | 33 min |
| Apr 10, 4:58 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Apr 10, 5:12 PM EDT | Special Marine Warning | JAX | 111 min | |
| Apr 10, 5:15 PM EDT | Special Weather Statement | JAX | Flagler, Putnam, Saint Johns | 60 min |
| Apr 10, 5:15 PM EDT | Special Weather Statement | JAX | Flagler, Putnam, Saint Johns | 60 min |
| Apr 10, 6:11 PM EDT | Special Marine Warning | JAX | 2 hr | |
| Apr 10, 7:08 PM EDT | Special Marine Warning | JAX | 67 min | |
| Apr 10, 2:13 PM EDT | Severe Thunderstorm Warning | JAX | Clinch | 47 min |
| Apr 10, 4:39 PM EDT | Special Weather Statement | JAX | Camden, Glynn | 51 min |
| Apr 10, 4:49 PM EDT | Tornado Warning | JAX | Camden, Glynn | 26 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2021Severe Thunderstorm Warnings in Georgia, 2021Every severe thunderstorm warning in 2021
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.