Alert archive / Michigan / 2013

Weather alerts in Michigan, August 2013

229 weather alerts in August 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in August 2013. Tap one for its archive.

Alerts
229
Warnings
106
Watches
4
Advisories
50
Busiest day
August 7, 201336 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Aug 1, 2:02 PM EDTSpecial Marine WarningAPX88 min
Aug 1, 6:25 PM EDTSevere Thunderstorm WarningDTXHuron50 min
Aug 1, 6:30 PM EDTSpecial Marine WarningDTX60 min
Aug 2, 1:29 PM EDTSevere Thunderstorm WarningAPXIosco, Ogemaw61 min
Aug 2, 1:50 PM EDTSpecial Marine WarningDTX85 min
Aug 2, 2:01 PM EDTMesoscale DiscussionSPCAlcona, Antrim, Arenac, Bay, Benzie, Clare and 35 more59 min
Aug 2, 3:12 PM EDTSpecial Marine WarningAPX63 min
Aug 2, 3:24 PM EDTMesoscale DiscussionSPCBerrien, Cass66 min
Aug 3, 3:26 AM EDTSmall Craft AdvisoryDTX41 hr
Aug 3, 4:01 AM EDTSmall Craft AdvisoryMQT25 hr
Aug 3, 4:17 AM EDTBeach Hazards StatementAPXAntrim, Emmet19 hr
Aug 3, 4:17 AM EDTDense Fog AdvisoryGRRAllegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more5 hr
Aug 3, 5:28 AM EDTDense Fog AdvisoryIWXBranch, Cass, Hillsdale, Saint Joseph4 hr
Aug 3, 10:49 AM EDTSmall Craft AdvisoryAPX19 hr
Aug 6, 10:13 PM EDTSmall Craft AdvisoryMQT28 hr
Aug 7, 1:18 AM EDTSevere Thunderstorm WarningMQTMenominee42 min
Aug 7, 1:59 AM EDTSpecial Marine WarningAPX91 min
Aug 7, 2:12 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Clare, Crawford, Grand Traverse, Gratiot and 16 more63 min
Aug 7, 2:21 AM EDTSpecial Marine WarningGRR114 min
Aug 7, 2:28 AM EDTSpecial Weather StatementGRRLake, Mason, Newaygo, Oceana2 hr
Aug 7, 2:29 AM EDTSevere Thunderstorm WatchSPCAlcona, Alpena, Antrim, Arenac, Bay, Benzie and 30 more5 hr
Aug 7, 2:39 AM EDTSevere Thunderstorm WarningAPXBenzie, Manistee66 min
Aug 7, 2:51 AM EDTSevere Thunderstorm WarningGRRMason, Oceana54 min
Aug 7, 3:12 AM EDTSevere Thunderstorm WarningAPXGrand Traverse, Wexford48 min
Aug 7, 3:19 AM EDTSpecial Marine WarningAPX71 min
Aug 7, 3:20 AM EDTSevere Thunderstorm WarningGRRLake, Mecosta55 min
Aug 7, 3:34 AM EDTSpecial Marine WarningAPX86 min
Aug 7, 3:59 AM EDTSevere Thunderstorm WarningAPXAntrim, Grand Traverse, Kalkaska, Wexford46 min
Aug 7, 4:23 AM EDTSevere Thunderstorm WarningAPXCrawford, Kalkaska, Missaukee, Roscommon52 min
Aug 7, 4:43 AM EDTSpecial Marine WarningDTX2 hr
Aug 7, 4:56 AM EDTSevere Thunderstorm WarningDTXBay, Midland, Saginaw64 min
Aug 7, 6:20 AM EDTSevere Thunderstorm WarningDTXGenesee, Lapeer, Tuscola55 min
Aug 7, 6:37 AM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 27 more113 min
Aug 7, 7:22 AM EDTSpecial Marine WarningDTX68 min
Aug 7, 8:06 AM EDTSpecial Marine WarningGRR54 min
Aug 7, 8:16 AM EDTSevere Thunderstorm WarningGRRVan Buren59 min
Aug 7, 8:32 AM EDTSpecial Weather StatementIWXCass43 min
Aug 7, 8:42 AM EDTSevere Thunderstorm WarningGRRCalhoun, Kalamazoo63 min
Aug 7, 8:46 AM EDTAreal Flood AdvisoryGRRVan Buren4 hr
Aug 7, 8:52 AM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Jackson and 7 more113 min
Aug 7, 9:08 AM EDTSpecial Weather StatementIWXBranch52 min
Aug 7, 10:13 AM EDTAreal Flood AdvisoryIWXBranch, Hillsdale, Saint Joseph3 hr
Aug 7, 10:30 AM EDTSevere Thunderstorm WarningDTXLenawee90 min
Aug 7, 1:08 PM EDTSpecial Weather StatementIWXBerrien37 min
Aug 7, 1:20 PM EDTSevere Thunderstorm WarningIWXBerrien40 min
Aug 7, 1:28 PM EDTSpecial Weather StatementGRRBarry, Eaton62 min
Aug 7, 2:35 PM EDTSpecial Weather StatementGRREaton55 min
Aug 7, 2:46 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Hillsdale, Jackson, Saint Joseph119 min
Aug 7, 2:53 PM EDTFlash Flood WarningIWXBerrien6 hr
Aug 7, 5:21 PM EDTSpecial Weather StatementIWXBerrien39 min
Aug 7, 10:05 PM EDTSpecial Marine WarningDTX70 min
Aug 8, 9:40 PM EDTSmall Craft AdvisoryMQT24 hr
Aug 12, 4:39 AM EDTSpecial Weather StatementGRRAllegan66 min
Aug 12, 5:41 AM EDTSpecial Weather StatementGRRBarry, Calhoun, Eaton, Kalamazoo64 min
Aug 12, 6:38 AM EDTSpecial Weather StatementGRRJackson67 min
Aug 12, 2:14 PM EDTRiver Flood AdvisoryGRRJackson6 hr
Aug 12, 3:59 PM EDTSmall Craft AdvisoryDTX48 hr
Aug 12, 4:00 PM EDTSmall Craft AdvisoryGRR35 hr
Aug 12, 4:10 PM EDTBeach Hazards StatementGRRAllegan, Mason, Muskegon, Oceana, Ottawa, Van Buren32 hr
Aug 12, 4:15 PM EDTBeach Hazards StatementIWX43 hr
Aug 12, 6:11 PM EDTSpecial Weather StatementIWXCass34 min
Aug 12, 6:19 PM EDTSpecial Weather StatementGRRCalhoun56 min
Aug 12, 6:25 PM EDTSevere Thunderstorm WarningDTXLivingston, Washtenaw65 min
Aug 12, 6:27 PM EDTSpecial Weather StatementIWXSaint Joseph33 min
Aug 12, 6:38 PM EDTSpecial Weather StatementGRRIngham37 min
Aug 12, 7:01 PM EDTSpecial Weather StatementGRRCalhoun, Jackson59 min
Aug 12, 7:04 PM EDTSpecial Weather StatementIWXCass41 min
Aug 12, 7:11 PM EDTSpecial Weather StatementIWXBranch34 min
Aug 12, 7:31 PM EDTSevere Thunderstorm WarningDTXLenawee, Monroe59 min
Aug 12, 7:48 PM EDTSpecial Weather StatementIWXCass42 min
Aug 12, 7:59 PM EDTSpecial Weather StatementGRRJackson31 min
Aug 12, 8:11 PM EDTSmall Craft AdvisoryAPX32 hr
Aug 12, 8:13 PM EDTSevere Thunderstorm WarningDTXWashtenaw62 min
Aug 12, 8:20 PM EDTSpecial Marine WarningDTX85 min
Aug 12, 8:31 PM EDTSpecial Marine WarningDTX89 min
Aug 12, 8:36 PM EDTSpecial Marine WarningAPX69 min
Aug 12, 8:45 PM EDTSpecial Marine WarningDTX90 min
Aug 12, 8:52 PM EDTSevere Thunderstorm WarningDTXMonroe83 min
Aug 12, 9:16 PM EDTSpecial Marine WarningDTX89 min
Aug 12, 9:19 PM EDTSpecial Weather StatementGRRCalhoun41 min
Aug 12, 9:42 PM EDTSpecial Weather StatementIWXHillsdale63 min
Aug 13, 3:48 AM EDTBeach Hazards StatementAPXBenzie, Leelanau, Manistee18 hr
Aug 19, 4:15 PM EDTSmall Craft AdvisoryMQT12 hr
Aug 20, 3:03 PM EDTSmall Craft AdvisoryGRR29 hr
Aug 20, 3:24 PM EDTBeach Hazards StatementGRRMason, Oceana33 hr
Aug 20, 3:35 PM EDTSmall Craft AdvisoryMQT31 hr
Aug 20, 3:37 PM EDTSmall Craft AdvisoryAPX34 hr
Aug 21, 5:21 AM EDTBeach Hazards StatementAPXBenzie, Leelanau, Manistee18 hr
Aug 21, 3:05 PM EDTMesoscale DiscussionSPCDelta, Dickinson, Iron, Menominee85 min
Aug 21, 3:11 PM EDTSpecial Marine WarningMQT49 min
Aug 21, 3:20 PM EDTSevere Thunderstorm WarningMQTGogebic, Ontonagon55 min
Aug 21, 3:26 PM EDTSevere Thunderstorm WatchSPCAlger, Baraga, Delta, Dickinson, Gogebic, Houghton and 6 more7 hr
Aug 21, 3:47 PM EDTSpecial Marine WarningMQT88 min
Aug 21, 4:08 PM EDTSevere Thunderstorm WarningMQTAlger, Marquette52 min
Aug 21, 4:14 PM EDTSevere Thunderstorm WarningMQTOntonagon46 min
Aug 21, 4:20 PM EDTSevere Thunderstorm WarningMQTGogebic, Iron55 min
Aug 21, 4:36 PM EDTSpecial Marine WarningMQT54 min
Aug 21, 4:46 PM EDTSevere Thunderstorm WarningMQTAlger, Luce44 min
Aug 21, 4:49 PM EDTSevere Thunderstorm WarningMQTAlger, Schoolcraft56 min
Aug 21, 4:56 PM EDTSevere Thunderstorm WarningMQTGogebic49 min
Aug 21, 4:59 PM EDTSevere Thunderstorm WarningMQTAlger, Marquette46 min
Aug 21, 5:10 PM EDTSpecial Marine WarningMQT95 min
Aug 21, 5:20 PM EDTSevere Thunderstorm WarningMQTIron55 min
Aug 21, 5:44 PM EDTSevere Thunderstorm WarningMQTAlger, Delta, Marquette, Schoolcraft61 min
Aug 21, 5:50 PM EDTSevere Thunderstorm WarningMQTIron55 min
Aug 21, 7:10 PM EDTMesoscale DiscussionSPCDelta, Luce, Menominee, Schoolcraft95 min
Aug 21, 7:11 PM EDTSpecial Marine WarningMQT94 min
Aug 21, 7:16 PM EDTSevere Thunderstorm WarningMQTMenominee59 min
Aug 21, 7:26 PM EDTSpecial Marine WarningMQT94 min
Aug 21, 8:43 PM EDTSpecial Marine WarningAPX92 min
Aug 21, 9:14 PM EDTMesoscale DiscussionSPCAntrim, Benzie, Charlevoix, Crawford, Grand Traverse, Kalkaska and 7 more61 min
Aug 21, 9:20 PM EDTSpecial Marine WarningAPX85 min
Aug 21, 9:28 PM EDTSpecial Marine WarningAPX62 min
Aug 21, 9:32 PM EDTSpecial Marine WarningAPX88 min
Aug 21, 9:42 PM EDTSevere Thunderstorm WarningAPXLeelanau48 min
Aug 21, 9:47 PM EDTSpecial Marine WarningAPX58 min
Aug 21, 9:47 PM EDTSpecial Marine WarningGRR118 min
Aug 21, 10:41 PM EDTSpecial Weather StatementGRRLake, Muskegon, Newaygo, Oceana64 min
Aug 21, 11:46 PM EDTSpecial Marine WarningGRR119 min
Aug 21, 11:46 PM EDTSpecial Weather StatementGRRAllegan, Ottawa59 min
Aug 22, 12:13 AM EDTSpecial Weather StatementGRRKent62 min
Aug 22, 1:03 AM EDTSpecial Weather StatementIWXBerrien42 min
Aug 22, 1:43 AM EDTSpecial Weather StatementIWXBerrien47 min
Aug 22, 3:33 AM EDTSmall Craft AdvisoryDTX36 hr
Aug 22, 1:10 PM EDTMesoscale DiscussionSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 16 more3 hr
Aug 22, 1:40 PM EDTSpecial Weather StatementGRRAllegan, Van Buren50 min
Aug 22, 3:07 PM EDTAreal Flood AdvisoryGRRCalhoun, Kalamazoo6 hr
Aug 22, 3:44 PM EDTFlash Flood WarningGRRCalhoun6 hr
Aug 22, 5:20 PM EDTRiver Flood AdvisoryGRRJackson82 min
Aug 22, 5:22 PM EDTAreal Flood AdvisoryGRRJackson4 hr
Aug 23, 2:51 AM EDTDense Fog AdvisoryIWX6 hr
Aug 24, 11:13 AM EDTSmall Craft AdvisoryMQT42 hr
Aug 24, 11:50 AM EDTSmall Craft AdvisoryGRR52 hr
Aug 24, 12:04 PM EDTBeach Hazards StatementGRRAllegan, Mason, Muskegon, Oceana, Ottawa, Van Buren52 hr
Aug 24, 4:22 PM EDTSmall Craft AdvisoryAPX31 hr
Aug 25, 3:17 AM EDTBeach Hazards StatementAPXAntrim, Benzie, Emmet, Leelanau, Manistee20 hr
Aug 25, 9:07 AM EDTSpecial Marine WarningMQT68 min
Aug 25, 9:25 AM EDTSpecial Marine WarningAPX2 hr
Aug 25, 10:15 AM EDTSpecial Marine WarningAPX30 min
Aug 25, 11:00 AM EDTSpecial Marine WarningMQT30 min
Aug 25, 11:02 AM EDTSmall Craft AdvisoryMQT58 min
Aug 25, 11:13 AM EDTSpecial Marine WarningAPX92 min
Aug 25, 11:32 AM EDTSevere Thunderstorm WarningAPXChippewa43 min
Aug 25, 1:37 PM EDTSpecial Marine WarningMQT83 min
Aug 25, 2:31 PM EDTSpecial Marine WarningAPX59 min
Aug 25, 2:33 PM EDTSpecial Marine WarningMQT57 min
Aug 25, 3:28 PM EDTSpecial Marine WarningMQT47 min
Aug 25, 4:49 PM EDTSpecial Marine WarningAPX86 min
Aug 25, 8:16 PM EDTMesoscale DiscussionSPCBaraga, Gogebic, Iron, Ontonagon119 min
Aug 25, 11:28 PM EDTSpecial Marine WarningAPX92 min
Aug 25, 11:35 PM EDTSmall Craft AdvisoryAPX4 hr
Aug 26, 12:22 AM EDTSpecial Marine WarningMQT83 min
Aug 26, 12:22 AM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Gogebic, Houghton, Iron and 3 more53 min
Aug 26, 12:42 AM EDTMesoscale DiscussionSPCBaraga, Delta, Dickinson, Gogebic, Houghton, Iron and 3 more63 min
Aug 26, 12:56 AM EDTSpecial Marine WarningAPX64 min
Aug 26, 1:35 AM EDTSpecial Marine WarningMQT40 min
Aug 26, 2:10 AM EDTSpecial Marine WarningMQT95 min
Aug 26, 2:36 AM EDTSpecial Marine WarningAPX84 min
Aug 26, 2:42 AM EDTSpecial Marine WarningMQT93 min
Aug 26, 2:48 AM EDTAreal Flood AdvisoryMQTGogebic, Ontonagon7 hr
Aug 26, 2:52 AM EDTSevere Thunderstorm WarningMQTBaraga, Marquette53 min
Aug 26, 4:00 AM EDTSpecial Marine WarningMQT75 min
Aug 26, 4:43 AM EDTSevere Thunderstorm WarningAPXChippewa, Mackinac62 min
Aug 26, 4:57 AM EDTSpecial Marine WarningAPX63 min
Aug 26, 8:24 AM EDTSpecial Weather StatementGRRLake, Mason66 min
Aug 26, 8:32 AM EDTSpecial Marine WarningGRR43 min
Aug 26, 9:17 AM EDTSpecial Weather StatementGRROceana58 min
Aug 27, 1:47 AM EDTSpecial Marine WarningMQT118 min
Aug 27, 3:52 AM EDTSpecial Weather StatementGRRLake, Mason, Newaygo, Oceana53 min
Aug 27, 4:18 AM EDTSpecial Weather StatementGRRClare, Clinton, Gratiot, Isabella, Mecosta, Montcalm and 2 more57 min
Aug 27, 5:59 AM EDTSpecial Weather StatementGRRIngham61 min
Aug 27, 3:15 PM EDTMesoscale DiscussionSPCAllegan, Barry, Benzie, Branch, Calhoun, Cass and 24 more3 hr
Aug 27, 3:18 PM EDTFlash Flood WarningAPXBenzie, Grand Traverse, Kalkaska, Leelanau6 hr
Aug 27, 3:21 PM EDTSpecial Marine WarningAPX54 min
Aug 27, 4:09 PM EDTSpecial Marine WarningAPX66 min
Aug 27, 4:14 PM EDTSevere Thunderstorm WarningAPXBenzie, Grand Traverse, Leelanau61 min
Aug 27, 4:52 PM EDTSevere Thunderstorm WatchSPCBarry, Bay, Calhoun, Clare, Clinton, Eaton and 24 more5 hr
Aug 27, 4:53 PM EDTSevere Thunderstorm WarningGRRClare, Osceola37 min
Aug 27, 5:02 PM EDTAreal Flood AdvisoryGRRClare, Osceola6 hr
Aug 27, 7:14 PM EDTMesoscale DiscussionSPCBarry, Branch, Calhoun, Clinton, Eaton, Genesee and 16 more91 min
Aug 27, 7:30 PM EDTSevere Thunderstorm WarningDTXSaginaw, Shiawassee45 min
Aug 27, 8:42 PM EDTSpecial Weather StatementGRRIsabella63 min
Aug 27, 9:29 PM EDTMesoscale DiscussionSPCAllegan, Barry, Berrien, Branch, Calhoun, Cass and 19 more61 min
Aug 27, 9:47 PM EDTAreal Flood AdvisoryGRRClinton, Gratiot, Ionia, Isabella, Mecosta, Montcalm6 hr
Aug 27, 9:53 PM EDTSpecial Weather StatementGRRClinton67 min
Aug 27, 10:12 PM EDTSpecial Weather StatementGRRClinton63 min
Aug 27, 10:18 PM EDTAreal Flood AdvisoryDTXSaginaw, Shiawassee6 hr
Aug 27, 11:32 PM EDTMarine Dense Fog AdvisoryMQT13 hr
Aug 28, 12:02 AM EDTAreal Flood AdvisoryGRRBarry, Clinton, Eaton, Ingham, Ionia, Jackson6 hr
Aug 28, 12:29 AM EDTAreal Flood AdvisoryDTXLivingston6 hr
Aug 28, 1:07 AM EDTAreal Flood AdvisoryGRRBarry, Calhoun, Jackson6 hr
Aug 28, 3:35 AM EDTRiver Flood AdvisoryGRRJackson4 hr
Aug 28, 4:21 AM EDTRiver Flood AdvisoryGRRClinton30 hr
Aug 28, 4:44 AM EDTDense Fog AdvisoryMQTDickinson, Gogebic, Iron4 hr
Aug 28, 10:26 AM EDTRiver Flood AdvisoryGRRIonia24 hr
Aug 29, 1:45 AM EDTDense Fog AdvisoryDTXBay, Genesee, Huron, Lapeer, Livingston, Midland and 5 more8 hr
Aug 29, 4:08 AM EDTDense Fog AdvisoryIWXBranch, Cass, Hillsdale, Saint Joseph5 hr
Aug 29, 5:34 AM EDTDense Fog AdvisoryGRRBarry, Calhoun, Clinton, Eaton, Gratiot, Ingham and 3 more4 hr
Aug 29, 9:10 AM EDTDense Fog AdvisoryIWX75 min
Aug 29, 2:59 PM EDTSpecial Marine WarningMQT76 min
Aug 29, 3:55 PM EDTSevere Thunderstorm WarningMQTGogebic65 min
Aug 29, 4:19 PM EDTMesoscale DiscussionSPCDickinson, Gogebic, Iron, Menominee2 hr
Aug 29, 4:45 PM EDTAreal Flood AdvisoryMQTGogebic3 hr
Aug 29, 5:27 PM EDTSmall Craft AdvisoryMQT35 hr
Aug 29, 5:53 PM EDTAreal Flood AdvisoryDTXWayne3 hr
Aug 29, 8:30 PM EDTMesoscale DiscussionSPCGogebic90 min
Aug 30, 12:57 AM EDTMesoscale DiscussionSPCGogebic93 min
Aug 30, 3:54 AM EDTBeach Hazards StatementMQTAlger, Marquette20 hr
Aug 30, 7:51 AM EDTSpecial Marine WarningMQT39 min
Aug 30, 8:35 AM EDTSpecial Marine WarningAPX55 min
Aug 30, 9:01 AM EDTSevere Thunderstorm WarningAPXLeelanau29 min
Aug 30, 9:03 AM EDTSpecial Marine WarningAPX27 min
Aug 30, 11:54 AM EDTSmall Craft AdvisoryGRR23 hr
Aug 30, 12:05 PM EDTBeach Hazards StatementGRRMason, Oceana23 hr
Aug 30, 12:57 PM EDTSmall Craft AdvisoryAPX3 hr
Aug 30, 1:24 PM EDTMesoscale DiscussionSPCAllegan, Arenac, Barry, Bay, Clare, Clinton and 29 more2 hr
Aug 30, 3:07 PM EDTSevere Thunderstorm WatchSPCAllegan, Barry, Bay, Berrien, Branch, Calhoun and 27 more7 hr
Aug 30, 6:14 PM EDTMesoscale DiscussionSPCAllegan, Barry, Bay, Berrien, Branch, Calhoun and 26 more61 min
Aug 30, 6:53 PM EDTSpecial Weather StatementGRRAllegan, Ottawa67 min
Aug 30, 8:00 PM EDTSevere Thunderstorm WarningGRRVan Buren60 min
Aug 30, 8:42 PM EDTSpecial Marine WarningDTX93 min
Aug 30, 9:32 PM EDTMesoscale DiscussionSPCBerrien, Branch, Calhoun, Cass, Hillsdale, Kalamazoo and 1 more58 min
Aug 30, 9:47 PM EDTSpecial Weather StatementGRRJackson43 min
Aug 30, 10:40 PM EDTSevere Thunderstorm WarningDTXWashtenaw, Wayne65 min
Aug 30, 10:48 PM EDTSpecial Marine WarningDTX87 min
Aug 30, 10:59 PM EDTAreal Flood AdvisoryDTXMacomb, Oakland, Wayne6 hr
Aug 30, 11:19 PM EDTFlash Flood WarningDTXMacomb, Oakland, Wayne6 hr
Aug 31, 12:20 AM EDTSpecial Marine WarningDTX100 min
Aug 31, 3:43 AM EDTSmall Craft AdvisoryDTX16 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

By county

Every county with at least one alert. A county page lists each alert that covered it.

41 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20122014

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.