Alert archive / Florida / Flash Flood Warnings in 2017
Flash Flood Warning 57, NWS Mobile, AL
NWS Mobile, AL issued this flash flood warning at Jun 30, 2017, 1:17 AM CDT for Okaloosa County, Florida. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2017, 1:17 AM CDT (06:17 UTC)
- Expired
- Jun 30, 2017, 6:15 AM CDT
- In force
- 5 hr
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
- Flood severity
- None
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 81 km from the middle of the area, began a volume at 06:20 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 6.3 hours before the alert went out and 236 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
- 1157 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
391 WGUS54 KMOB 300617 FFWMOB FLC091-301115- /O.NEW.KMOB.FF.W.0057.170630T0617Z-170630T1115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Mobile AL 117 AM CDT FRI JUN 30 2017 The National Weather Service in Mobile has issued a * Flash Flood Warning for... Northwestern Okaloosa County in northwestern Florida... * Until 615 AM CDT * At 116 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Baker. Additional rainfall amounts up to one inch is possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 3072 8679 3089 8679 3091 8662 3083 8660 $$
2 follow-up statements
039 WGUS74 KMOB 300819 FFSMOB Flash Flood Statement National Weather Service Mobile AL 319 AM CDT FRI JUN 30 2017 FLC091-301115- /O.CON.KMOB.FF.W.0057.000000T0000Z-170630T1115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Okaloosa FL- 319 AM CDT FRI JUN 30 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR NORTHWESTERN OKALOOSA COUNTY... At 318 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. 3 to 5 inches of rain have fallen since midnight. Flash flooding is expected to begin shortly. Some locations that will experience flooding include... Baker. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. Please report flooding to your local law enforcement agency when you can do so safely. && LAT...LON 3072 8679 3089 8679 3091 8662 3083 8660 $$
477 WGUS74 KMOB 300908 FFSMOB Flash Flood Statement National Weather Service Mobile AL 408 AM CDT FRI JUN 30 2017 FLC091-301115- /O.CON.KMOB.FF.W.0057.000000T0000Z-170630T1115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Okaloosa FL- 408 AM CDT FRI JUN 30 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR NORTHWESTERN OKALOOSA COUNTY... At 401 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. 3 to 6 inches of rain have fallen. Flash flooding is expected to begin shortly. Some locations that will experience flooding include... Baker. Significant water rises are occurring on the Blackwater River 4 miles northwest of Baker, and are approaching minor flood state levels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. Stay away or be swept away. River banks and culverts can become unstable and unsafe. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 3072 8679 3089 8679 3091 8662 3083 8660 $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 12:11 AM CDT | Flash Flood Warning | MOB | Santa Rosa | 6 hr |
| Jun 30, 12:32 AM CDT | Special Weather Statement | MOB | Santa Rosa | 58 min |
| Jun 30, 3:47 AM CDT | Flash Flood Warning | MOB | Santa Rosa | 2 hr |
| Jun 30, 5:28 AM CDT | River Flood Warning | MOB | Okaloosa, Santa Rosa | 35 hr |
| Jun 30, 6:06 AM CDT | Areal Flood Warning | MOB | Okaloosa, Santa Rosa | 12 hr |
| Jun 30, 9:02 AM CDT | River Flood Warning | MOB | Okaloosa | 58 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.