Alert archive / Florida / Areal Flood Warnings in 2013

Areal Flood Warning 21, NWS Mobile, AL

July 6, 2013Okaloosa County, Florida

NWS Mobile, AL issued this areal flood warning at Jul 6, 2013, 10:48 PM CDT for Okaloosa County, Florida. It was in force for 12 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: Jul 6, 2013, 10:48 PM CDT (03:48 UTC)
Expired: Jul 7, 2013, 10:45 AM CDT
In force: 12 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 61 km from the middle of the area, began a volume at 03:51 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, 3.8 hours before the alert went out and 216 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 780 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 629 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

363 
WGUS44 KMOB 070348
FLWMOB

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1048 PM CDT SAT JUL 6 2013

FLC091-071545-
/O.NEW.KMOB.FA.W.0021.130707T0348Z-130707T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OKALOOSA FL-
1048 PM CDT SAT JUL 6 2013

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* FLOOD WARNING FOR...
  OKALOOSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1045 AM CDT SUNDAY

* HEAVY RAINS THAT HAVE FALLEN OVER MUCH OF OKALOOSA COUNTY  
  SINCE THURSDAY WILL CONTINUE TO CAUSE INUNDATION FLOODING OF 
  LOW LYING AND POOR DRAINAGE AREAS THROUGH SUNDAY MORNING. 
  ADDITIONAL SHOWERS AND THUNDERSTORMS MAY DEVELOP AND MOVE ACROSS 
  THE AREA LATER TONIGHT AND EARLY SUNDAY MORNING. IF HEAVY RAINS
  DEVELOP...FLASH FLOOD WARNINGS MAY BECOME NECESSARY.  ALL 
  INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.

* LOCATIONS IMPACTED INCLUDE...
  OCEAN CITY...         FORT WALTON BEACH...  SHALIMAR...
  LAKE LORRAINE...      CINCO BAYOU...        WRIGHT...
  VALPARAISO...         NICEVILLE...          MARY ESTHER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GENERAL INUNDATION FLOODING IS EXPECTED AS SMALLER CREEKS OVERFLOW
WHILE TRYING TO DISCHARGE INTO AREA RIVERS. SLOW STEADY RISES IN
WATER CAN BE EXPECTED ALONG SMALL CREEKS AND RIVERS.

&&

LAT...LON 3039 8680 3040 8676 3041 8680 3100 8679
      3099 8639 3045 8639 3045 8642 3048 8645
      3049 8648 3046 8649 3042 8659 3040 8658
      3039 8653 3042 8650 3041 8644 3040 8640
      3038 8639 3038 8640

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 6, 11:40 PM CDT	Areal Flood Warning	MOB	Santa Rosa	12 hr

Nearby

Areal Flood Warnings in Florida, 2013 Every areal flood warning in 2013

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.