Alert archive / Alabama / Tornado Watches in 2017
Tornado Watch 362
The Storm Prediction Center issued this tornado watch at Jun 21, 2017, 6:45 PM CDT for 11 counties in Alabama; 7 counties in Florida; 11 counties in Mississippi. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2017, 6:45 PM CDT (23:45 UTC)
- Expired
- Jun 22, 2017, 2:59 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 29 counties
Baldwin County, AL, Butler County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Geneva County, AL, Mobile County, AL, Monroe County, AL, Washington County, AL, Bay County, FL, Escambia County, FL, Holmes County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Lamar County, MS, Pearl River County, MS, Perry County, MS, Stone County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 37 km from the middle of the area, began a volume at 23:49 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 6:45 PM CDT | Tornado Warning | MOB | Covington | 45 min |
| Jun 21, 7:16 PM CDT | Tornado Warning | MOB | Covington, Crenshaw | 19 min |
| Jun 21, 7:37 PM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 53 min |
| Jun 21, 7:41 PM CDT | Severe Thunderstorm Warning | MOB | Escambia | 39 min |
| Jun 21, 8:51 PM CDT | Tornado Warning | MOB | Covington | 24 min |
| Jun 21, 9:10 PM CDT | Severe Thunderstorm Warning | MOB | Okaloosa | 35 min |
| Jun 21, 9:21 PM CDT | Tornado Warning | MOB | Okaloosa | 22 min |
| Jun 21, 10:36 PM CDT | Flash Flood Warning | MOB | Butler, Covington, Crenshaw | 6 hr |
| Jun 22, 1:04 AM CDT | Tornado Warning | TAE | Geneva | 26 min |
| Jun 22, 1:14 AM CDT | Tornado Warning | MOB | Covington | 46 min |
| Jun 22, 1:44 AM CDT | Severe Thunderstorm Warning | MOB | Baldwin | 41 min |
| Jun 22, 2:24 AM CDT | Flash Flood Warning | MOB | Covington, Escambia | 6 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 11.8 hours before the alert went out and 185 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
- 262 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 485 m²/s²
- 0-3 km storm-relative helicity
- 506 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.3
The text
As transmitted.
383 WWUS20 KWNS 212343 SEL2 SPC WW 212343 ALZ000-FLZ000-MSZ000-CWZ000-220800- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 362 NWS Storm Prediction Center Norman OK 645 PM CDT Wed Jun 21 2017 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southern Alabama Western Florida Panhandle Southern Mississippi Coastal Waters * Effective this Wednesday night and Thursday morning from 645 PM until 300 AM CDT. * Primary threats include... A couple tornadoes possible Isolated damaging wind gusts to 70 mph possible SUMMARY...A few tornadoes and damaging wind gusts will remain possible across the watch area this evening and tonight, as showers and thunderstorms rotate inland around TS Cindy. The tornado watch area is approximately along and 65 statute miles north and south of a line from 40 miles northwest of Gulfport MS to 20 miles east northeast of Panama City FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 359...WW 360...WW 361... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 17025. ...Hart
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:15 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 3 hr |
| Jun 20, 9:48 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 57 min |
| Jun 20, 10:24 PM CDT | Tornado Watch | SPC | Baldwin, Mobile | 12 hr |
| Jun 21, 2:08 AM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 2 hr |
| Jun 21, 7:47 AM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 118 min |
| Jun 21, 10:01 AM CDT | Tornado Watch | SPC | Baldwin, Covington, Escambia, Mobile | 9 hr |
| Jun 21, 3:42 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 93 min |
| Jun 21, 6:29 PM CDT | Mesoscale Discussion | SPC | Baldwin, Conecuh, Covington, Escambia, Mobile, Washington | 61 min |
Nearby
Tornado Watches in Alabama, 2017Tornado Watches in Mississippi, 2017Tornado Watches in Florida, 2017Every tornado watch 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.