Alert archive / Florida / Flash Flood Warnings in 2017
Flash Flood Warning 16, NWS Tallahassee, FL
NWS Tallahassee, FL issued this flash flood warning at Oct 22, 2017, 10:59 PM CDT for Walton County, Florida. It was in force for 4 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 22, 2017, 10:59 PM CDT (03:59 UTC)
- Expired
- Oct 23, 2017, 3:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Tallahassee, FL
- Area
- Storm-based polygon
- Flood severity
- None
County Walton County, FL
The radar
The Eglin Afb radar (KEVX), 30 km from the middle of the area, began a volume at 04:03 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 23, 12:20 AM CDT | FLASH FLOOD | N Seagrove Beach, FL | SOME FLOODING REPORTED AT THE INTERSECTIONS OF COUNTY HIGHWAY 30A AND NIGHTCAP STREET AS WELL AS COUNTY HIGHWAY 30A AND THYME STREET. WATER WAS ESTIMATED AT NO MORE THAN 6 INCHES DEEP. |
| Oct 23, 1:00 AM CDT | FLASH FLOOD | 1 Ene Seagrove Beach, FL | FLOODING REPORTED EARLIER NEAR COUNTY HIGHWAY 395 AND HIGHWAY 30A. WATER HAS SINCE RECEDED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 4.0 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
- 30 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1330 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
818
WGUS52 KTAE 230359
FFWTAE
FLC131-230800-
/O.NEW.KTAE.FF.W.0016.171023T0359Z-171023T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Tallahassee FL
1059 PM CDT SUN OCT 22 2017
The National Weather Service in Tallahassee has issued a
* Flash Flood Warning for...
Walton County in the Panhandle of Florida...
* Until 300 AM CDT
* At 1059 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Over three inches of rain have
already fallen in western Walton county and additional heavy
rainfall is moving into the area. Flash flooding is expected to
begin shortly.
* Some locations that will experience flooding include...
Santa Rosa Beach, De Funiak Springs, Eglin Air Force Base, Union,
Liberty, Freeport, Paxton, Pond Creek, Oakwood Hills, Cluster
Springs, Gaskin, Portland, Alpine Heights, Villa Tasso, Darlington,
Blue Mountain Beach, De Funiak Spring Airport, Seaside, Rock Hill
and Glendale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3040 8639 3038 8633 3042 8631 3040 8623
3043 8625 3038 8617 3039 8610 3040 8611
3044 8616 3047 8613 3046 8619 3050 8620
3048 8622 3046 8639 3099 8639 3099 8604
3066 8602 3030 8609 3037 8640
$$
42-DVD1 follow-up statement
049
WGUS72 KTAE 230750
FFSTAE
Flash Flood Statement
National Weather Service Tallahassee FL
250 AM CDT MON OCT 23 2017
FLC131-230800-
/O.EXP.KTAE.FF.W.0016.000000T0000Z-171023T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Walton FL-
250 AM CDT MON OCT 23 2017
...THE FLASH FLOOD WARNING FOR WALTON COUNTY WILL EXPIRE AT 300 AM
CDT...
The heavy rain has ended. Flash flooding is no longer expected to
pose a threat. Please continue to heed any remaining road closures.
LAT...LON 3040 8639 3038 8633 3042 8631 3040 8623
3043 8625 3038 8617 3039 8610 3040 8611
3044 8616 3047 8613 3046 8619 3050 8620
3048 8622 3046 8639 3099 8639 3099 8604
3066 8602 3030 8609 3037 8640
$$
42-DVDThe office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 7:06 PM CDT | Special Weather Statement | TAE | Walton | 39 min |
| Oct 22, 9:51 PM CDT | Special Marine Warning | TAE | 114 min | |
| Oct 22, 10:56 PM CDT | Special Weather Statement | TAE | Walton | 49 min |
| Oct 22, 11:40 PM CDT | Special Marine Warning | TAE | 65 min | |
| Oct 22, 11:53 PM CDT | Special Weather Statement | TAE | Walton | 52 min |
| Oct 22, 11:57 PM CDT | Special Marine Warning | TAE | 2 hr | |
| Oct 23, 12:42 AM CDT | Special Weather Statement | TAE | Wakulla | 48 min |
| Oct 23, 1:26 AM CDT | Special Weather Statement | TAE | Leon | 34 min |
| Oct 23, 1:52 AM CDT | Special Weather Statement | TAE | Leon | 23 min |
| Oct 23, 2:46 AM CDT | Special Marine Warning | TAE | 119 min | |
| Oct 23, 4:02 AM CDT | Special Weather Statement | TAE | Wakulla | 43 min |
| Oct 23, 9:47 AM CDT | Special Marine Warning | TAE | 28 min | |
| Oct 23, 9:55 AM CDT | Special Weather Statement | TAE | Wakulla | 50 min |
| Oct 23, 10:27 AM CDT | Special Weather Statement | TAE | Wakulla | 48 min |
| Oct 23, 10:41 AM CDT | Special Marine Warning | TAE | 94 min |
Nearby
Flash Flood Warnings in Florida, 2017Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.