Alert archive / Iowa / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 91, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 4, 2011, 3:52 PM CDT for Davis County, Iowa. It was in force for 53 min. 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 4, 2011, 3:52 PM CDT (20:52 UTC)
- Expired
- Jun 4, 2011, 4:45 PM CDT
- In force
- 53 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Davis County, IA
The radar
The Des Moines radar (KDMX), 156 km from the middle of the area, began a volume at 20:54 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
Davenport, (KDVN), launched 12:00Z, 8.9 hours before the alert went out and 191 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
- 2541 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1175 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -128 m²/s²
- 0-3 km storm-relative helicity
- -36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
690
WUUS53 KDMX 042052
SVRDMX
IAC051-042145-
/O.NEW.KDMX.SV.W.0091.110604T2052Z-110604T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
352 PM CDT SAT JUN 4 2011
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
DAVIS COUNTY IN SOUTHEAST IOWA...
* UNTIL 445 PM CDT
* AT 350 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11
MILES NORTHWEST OF LANCASTER...AND MOVING NORTHEAST AT 25 MPH.
AT 344 PM...HALF DOLLAR SIZED HAIL WAS REPORTED IN EXLINE BY THE
IOWA STATE PATROL.
* LOCATIONS IMPACTED INCLUDE...
BLOOMFIELD...DRAKESVILLE...PULASKI AND FLORIS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
LARGE HAIL CAN CAUSE INJURY AND PROPERTY DAMAGE. SEEK SAFETY INDOORS
UNTIL THE STORM PASSES.
&&
LAT...LON 4067 9263 4068 9265 4079 9264 4090 9219
4090 9218 4061 9217 4060 9217 4059 9264
TIME...MOT...LOC 2051Z 245DEG 21KT 4064 9265
WIND...HAIL 60MPH 1.00IN
$$
SMALL3 follow-up statements
854
WWUS53 KDMX 042112
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
412 PM CDT SAT JUN 4 2011
IAC051-042145-
/O.CON.KDMX.SV.W.0091.000000T0000Z-110604T2145Z/
DAVIS IA-
412 PM CDT SAT JUN 4 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN DAVIS
COUNTY UNTIL 445 PM CDT...
AT 408 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTH OF BLOOMFIELD...OR 10 MILES NORTHEAST OF LANCASTER...MOVING
EAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
BLOOMFIELD AND PULASKI.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN DES MOINES.
PREPARE FOR LARGE HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A REINFORCED BUILDING AND AWAY FROM WINDOWS.
&&
LAT...LON 4059 9254 4063 9261 4072 9261 4081 9218
4060 9217
TIME...MOT...LOC 2113Z 262DEG 21KT 4066 9242
WIND...HAIL 60MPH 1.00IN
$$
SMALL757 WWUS53 KDMX 042130 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 430 PM CDT SAT JUN 4 2011 IAC051-042145- /O.CON.KDMX.SV.W.0091.000000T0000Z-110604T2145Z/ DAVIS IA- 430 PM CDT SAT JUN 4 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN DAVIS COUNTY UNTIL 445 PM CDT... AT 426 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES WEST OF MILTON...OR 16 MILES NORTHEAST OF LANCASTER...MOVING EAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN DAVIS COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR LARGE HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A REINFORCED BUILDING AND AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. && LAT...LON 4059 9238 4073 9242 4081 9218 4060 9217 TIME...MOT...LOC 2130Z 268DEG 29KT 4065 9222 WIND...HAIL 60MPH 1.00IN $$ SMALL
796 WWUS53 KDMX 042146 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 446 PM CDT SAT JUN 4 2011 IAC051-042156- /O.EXP.KDMX.SV.W.0091.000000T0000Z-110604T2145Z/ DAVIS IA- 446 PM CDT SAT JUN 4 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DAVIS COUNTY HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN DES MOINES. LAT...LON 4059 9238 4073 9242 4081 9218 4060 9217 TIME...MOT...LOC 2130Z 268DEG 29KT 4065 9222 $$ SMALL
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 3:16 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 44 min |
| Jun 4, 3:51 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 39 min |
| Jun 4, 4:50 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Webster, Wright | 40 min |
| Jun 4, 3:31 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 44 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2011Every severe thunderstorm warning in 2011
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.