Alert archive / Iowa / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 3, NWS Des Moines, IA

March 30, 2016Dallas County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Mar 30, 2016, 7:26 PM CDT for Dallas County, Iowa. It was in force for 19 min. 1 report 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
Mar 30, 2016, 7:26 PM CDT (00:26 UTC)
Expired
Mar 30, 2016, 7:45 PM CDT
In force
19 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Dallas County, IA

The radar

The Des Moines radar (KDMX), 20 km from the middle of the area, began a volume at 00:28 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

TimeReportWhereRemark
Mar 30, 7:30 PM CDTHAIL 1.251 E Dallas Center, IADALLAS CENTER FIRE DEPARTMENT REPORTED JUST UNDER PING PONG BALL SIZED HAIL MIXED IN WITH SMALLER HAIL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.4 hours before the alert went out and 206 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2016-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2016-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
27 J/kg
Mixed-layer CIN
-237 J/kg
Mixed-layer LCL
1015 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
229 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted.

380 
WUUS53 KDMX 310026
SVRDMX
IAC049-310045-
/O.NEW.KDMX.SV.W.0003.160331T0026Z-160331T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
726 PM CDT WED MAR 30 2016

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN DALLAS COUNTY IN CENTRAL IOWA...

* UNTIL 745 PM CDT

* AT 724 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DALLAS
  CENTER...OR NEAR ADEL...MOVING NORTHEAST AT 30 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...
  ADEL...DALLAS CENTER...GRANGER AND WOODWARD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4160 9395 4162 9406 4184 9397 4179 9383
TIME...MOT...LOC 0024Z 205DEG 25KT 4166 9399 

HAIL...1.00IN
WIND...<50MPH
 
$$

SKOW
2 follow-up statements
625 
WWUS53 KDMX 310032
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
732 PM CDT WED MAR 30 2016

IAC049-310045-
/O.CON.KDMX.SV.W.0003.000000T0000Z-160331T0045Z/
DALLAS IA-
732 PM CDT WED MAR 30 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR NORTHEASTERN DALLAS COUNTY...

AT 732 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR DALLAS CENTER...
OR 6 MILES NORTHEAST OF ADEL...MOVING NORTHEAST AT 30 MPH.

HAZARD...HALF DOLLAR SIZE HAIL. 

SOURCE...LAW ENFORCEMENT. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

LOCATIONS IMPACTED INCLUDE...
DALLAS CENTER...GRANGER AND WOODWARD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4165 9392 4167 9403 4184 9397 4179 9383
TIME...MOT...LOC 0032Z 203DEG 25KT 4170 9395 

HAIL...1.25IN
WIND...<50MPH
 
$$

SKOW
281 
WWUS53 KDMX 310042
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
742 PM CDT WED MAR 30 2016

IAC049-310052-
/O.EXP.KDMX.SV.W.0003.000000T0000Z-160331T0045Z/
DALLAS IA-
742 PM CDT WED MAR 30 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DALLAS COUNTY
WILL EXPIRE AT 745 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO
EXPIRE.  HOWEVER SMALL HAIL....GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4165 9392 4167 9403 4184 9397 4179 9383
TIME...MOT...LOC 0041Z 205DEG 25KT 4170 9395 

$$

SKOW

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 7:53 PM CDTSpecial Weather StatementDMXPolk37 min
Mar 30, 8:00 PM CDTSevere Thunderstorm WarningDMXJasper, Polk35 min
Mar 30, 10:16 PM CDTSpecial Weather StatementDMXHumboldt29 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2016Every severe thunderstorm warning in 2016

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.