Alert archive / Missouri / Flash Flood Warnings in 2012

Flash Flood Warning 19, NWS Springfield, MO

May 1, 2012Jasper County, Missouri

NWS Springfield, MO issued this flash flood warning at May 1, 2012, 12:56 AM CDT for Jasper County, Missouri. It was in force for 4 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: May 1, 2012, 12:56 AM CDT (05:56 UTC)
Expired: May 1, 2012, 4:56 AM CDT
In force: 4 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

County Jasper County, MO

The radar

The Springfield radar (KSGF), 73 km from the middle of the area, began a volume at 05:58 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

Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 54 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: 202 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1176 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

335 
WGUS53 KSGF 010556
FFWSGF
MOC097-011200-
/O.NEW.KSGF.FF.W.0019.120501T0556Z-120501T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1256 AM CDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JASPER COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 700 AM CDT.

* AT 1253 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL       
  ACROSS NORTHWEST JASPER COUNTY.  EXCESSIVE RAINFALL WILL           
  EVENTUALLY IMPACT NEARLY ALL OF JASPER COUNTY...CAUSING FLASH      
  FLOODING. RAINFALL AMOUNTS COULD RANGE FROM ONE TO FOUR INCHES     
  THROUGH THE OVERNIGHT HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. CREEKS...STREAMS AND LOW WATER CROSSINGS WILL BE ESPECIALLY
  SUSCEPTIBLE TO THE DANGERS OF FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3735 9409 3729 9408 3729 9405 3705 9406
      3706 9461 3736 9462

$$

CRAMER

2 follow-up statements

092 
WGUS73 KSGF 010721
FFSSGF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
221 AM CDT TUE MAY 1 2012

MOC097-011200-
/O.CON.KSGF.FF.W.0019.000000T0000Z-120501T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JASPER MO-
221 AM CDT TUE MAY 1 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM CDT FOR
JASPER COUNTY...

AT 218 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW
MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS JASPER COUNTY. 
AN ADDITIONAL ONE TO TWO INCHES WILL BE POSSIBLE ACROSS THE AREA.  
NORTHWEST JASPER COUNTY HAS BEEN IMPACTED THE MOST...AS RADAR 
ESTIMATED THAT THREE TO FOUR INCHES FELL NEAR THE COMMUNITY OF 
ASBURY. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. CREEKS...STREAMS AND LOW WATER CROSSINGS WILL BE ESPECIALLY
SUSCEPTIBLE TO THE DANGERS OF FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3735 9409 3729 9408 3729 9405 3705 9406
      3706 9461 3736 9462

$$

CRAMER

866 
WGUS73 KSGF 010956
FFSSGF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
456 AM CDT TUE MAY 1 2012

MOC097-011006-
/O.CAN.KSGF.FF.W.0019.000000T0000Z-120501T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JASPER MO-
456 AM CDT TUE MAY 1 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR JASPER COUNTY...

RAINFALL HAS COME TO AN END ACROSS THE WARNED AREA...AND WATER 
LEVELS ON AREA CREEKS AND STREAMS WILL BEGIN TO RECEDE THIS MORNING. 
FLOODING WILL CONTINUE IN MANY PLACES TODAY HOWEVER...AND THE FLASH 
FLOOD WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING.

IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL 
LAW ENFORCEMENT AGENCY.

LAT...LON 3735 9409 3729 9408 3729 9405 3705 9406
      3706 9461 3736 9462

$$

BOXELL

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 11:43 PM CDT	Flash Flood Warning	SGF	Barton, Vernon	5 hr
May 1, 1:23 AM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	52 min
May 1, 1:41 AM CDT	Severe Thunderstorm Warning	SGF	Jasper	34 min
May 1, 2:06 AM CDT	Flash Flood Warning	SGF	Cedar, Dade, St. Clair	6 hr
May 1, 2:22 AM CDT	Special Weather Statement	SGF	Barry, Lawrence, McDonald, Newton	38 min
May 1, 2:41 AM CDT	Areal Flood Advisory	SGF	Newton	91 min
May 1, 3:03 AM CDT	Special Weather Statement	SGF	Barry, Christian, Greene, Stone	27 min
May 1, 3:12 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene	33 min
May 1, 3:25 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Webster, Wright	35 min
May 1, 3:26 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Stone, Taney	34 min
May 1, 3:33 AM CDT	Severe Thunderstorm Warning	SGF	Dallas, Polk, Webster	28 min
May 1, 4:02 AM CDT	Special Weather Statement	SGF	Camden, Douglas, Laclede, Miller, Pulaski, Wright	43 min
May 1, 4:40 AM CDT	Special Weather Statement	SGF	Douglas, Maries, Ozark, Phelps, Pulaski, Texas	50 min
May 1, 4:49 AM CDT	Areal Flood Warning	SGF	Barton, Jasper, Vernon	27 hr
May 1, 6:41 AM CDT	River Flood Warning	SGF	Jasper	44 hr
May 1, 7:49 AM CDT	Areal Flood Warning	SGF	Cedar, Dade, St. Clair	8 hr

Nearby

Flash Flood Warnings in Missouri, 2012 Every flash flood warning in 2012

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.