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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Glasgow, MT (GGW), 00Z. Its levels are in the table below.
Observed Sounding at Glasgow, MT (GGW), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (59)
Glasgow, MT (GGW): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
942 mb700 m18.02.0190° 8 kt
928 mb823 m16.61.6—
925 mb849 m16.41.4230° 9 kt
888 mb1195 m13.20.2—
865 mb1415 m12.0-5.0—
854 mb1524 m13.7-8.0230° 14 kt
850 mb1562 m14.0-7.0270° 18 kt
839 mb1671 m13.2-8.8—
826 mb1802 m13.2-10.8—
794 mb2134 m11.9-16.3270° 26 kt
765 mb2438 m10.8-21.4280° 20 kt
752 mb2585 m10.2-23.8—
738 mb2743 m9.3-23.2280° 22 kt
711 mb3048 m7.7-22.1280° 24 kt
700 mb3176 m7.2-20.8285° 21 kt
685 mb3353 m6.0-20.2285° 21 kt
669 mb3547 m4.6-19.4—
655 mb3719 m3.6-22.4—
636 mb3962 m1.6-20.2285° 25 kt
614 mb4239 m-0.7-17.7—
593 mb4516 m-3.1-19.1—
577 mb4732 m-4.9-19.9—
566 mb4877 m-5.4-20.7280° 21 kt
556 mb5023 m-6.1-23.1—
545 mb5182 m-6.6-24.8290° 30 kt
528 mb5427 m-8.1-25.1—
518 mb5575 m-7.7-30.7—
504 mb5791 m-9.0-32.0300° 28 kt
500 mb5850 m-9.5-32.5300° 26 kt
484 mb6096 m-11.7-33.0300° 25 kt
465 mb6401 m-14.5-33.6305° 25 kt
446 mb6706 m-17.3-34.1300° 25 kt
428 mb7010 m-20.1-34.7305° 26 kt
411 mb7315 m-22.8-35.3305° 27 kt
400 mb7520 m-24.7-35.7300° 32 kt
388 mb7740 m-26.3-37.3—
362 mb8230 m-30.4-38.6305° 37 kt
352 mb8434 m-32.1-39.1—
334 mb8800 m-35.5-40.5—
323 mb9032 m-36.1-44.1—
313 mb9249 m-37.1-46.1—
300 mb9540 m-39.5-47.5310° 45 kt
278 mb10058 m-43.2-49.6310° 48 kt
266 mb10363 m-45.2-50.5310° 50 kt
254 mb10668 m-47.3-53.3315° 50 kt
250 mb10770 m-48.3-54.3315° 52 kt
235 mb11172 m-51.7-56.7—
221 mb11565 m-54.7-59.7—
210 mb11887 m-54.8-60.8310° 46 kt
200 mb12200 m-55.9-61.9315° 54 kt
184 mb12727 m-58.7-64.7—
173 mb13106 m-60.7-67.7300° 54 kt
162 mb13522 m-60.7-67.7—
150 mb14000 m-61.5-69.5310° 57 kt
138 mb14516 m-62.9-69.9—
127 mb15026 m-65.7-72.7300° 44 kt
117 mb15545 m-66.2-75.5295° 42 kt
105 mb16154 m-65.5-77.5305° 42 kt
100 mb16480 m-65.5-78.5300° 31 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.